DOCSLIB.ORG

Action Against Terrorism Unit

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Action Against Terrorism Unit Transnational Threats Department Action against Terrorism Unit Organization for Security and Co-operation in Europe Who we are The Action against Terrorism OSCE-wide Counter-Terrorism Unit of the OSCE Transnational Conference Threats Department supports the In co-operation with the OSCE international and regional Chairmanship, the Unit organizes organizations, civil society, youth OSCE’s 57 participating States the OSCE-wide Counter-Terrorism and the private sector to examine Conference, which brings together emerging threats and explore ways and 11 Partners for Co-operation high-level representatives, counter- to counter and prevent terrorism at terrorism experts and practitioners, local, regional and global levels. in the implementation of their anti-terrorism commitments. Anti-terrorist activities play Based on the OSCE’s a prominent role in the comprehensive and co- OSCE’s overall efforts to operative approach, the Unit address transnational threats. promotes multi-stakeholder Guided by the ‘Consolidated dialogue, raises awareness and Framework for the Fight carries out capacity building to against Terrorism’, the Unit prevent and counter terrorism acts as the OSCE focal by working closely with the point, information resource, Organization’s field presences and implementation partner, and executive structures. providing OSCE participating States and Partners for Co- The Unit collaborates with operation with a wide range international and other regional of programmes and activities. organizations and promotes public-private partnerships to advance the global counter-terrorism agenda. What we do The terrorist threat is multi-faceted units, law enforcement in the International Civil Aviation bodies and the judiciary. Organization’s Public Key and evolving. The Action against Directory, enhancing their use Countering the use of the Advance Passenger Terrorism Unit is responsive to the of the internet for Information system, better terrorist purposes detecting forged travel challenges facing the participating documents and improving The internet is increasingly identity management systems. States and Partners for Co-operation exploited by terrorists to find, recruit and train new OSCE Counter- in countering terrorism. members, collect and transfer Terrorism Network funds, organize attacks and incite violence. The Unit More than 1,000 counter- The Unit carries out a wide and strengthening policies on works to identify effective terrorism focal points within range of counter-terrorism youth participation and gender counter measures such as the OSCE participating States, programmes and activities: awareness, the Unit is at the an online course, publicly executive structures and field forefront of efforts to promote accessible, showing how presences, and regional and Promoting and facilitate the exchange of terrorists manipulate the international organizations implementation of good practices in countering internet for their own nefarious are connected through the the international incitement to terrorism aims and how to counter web-based Counter-Terrorism legal framework and preventing terrorist this multi-faceted threat. Network. The network against terrorism radicalization, while upholding facilitates exchange on human rights and the rule of Protecting non- counter-terrorism programmes The universal implementation law. Upon request, the Unit nuclear critical energy and legal developments, as of the international legal also assists in developing and infrastructure well as regional and global framework against terrorism implementing comprehensive terrorism trends. The Unit allows for the pursuit and national strategies and action The impact of terrorist also produces a bi-monthly prosecution of terrorists plans to counter violent attacks on critical energy newsletter for the Network. beyond national boundaries extremism and terrorism. infrastructure is potentially based on the uniform devastating to society. The criminalization of terrorist Suppressing the Unit engages both the public acts. The Unit supports financing of terrorism and the private sectors in OSCE participating States in crisis management simulation implementing this framework To support national efforts exercises to increase the and promotes with relevant to counter terrorist financing, resilience of such infrastructure UN bodies and the Global the Unit has developed, to terrorist cyber-attacks. Counterterrorism Forum in co-operation with the international legal co-operation United Nations Office on Strengthening travel in terrorism-related cases. Drugs and Crime, training document security courses focused on inter- Preventing and agency co-operation, Through specially designed countering violent analysis, investigation, and capacity-building activities from extremism and creating a toolkit for the the perspective of counter- radicalization that lead financial disruption of terrorist terrorism, the Unit works to terrorism (VERLT) networks. The training courses together with the OSCE Border are based on real-world Security and Management By engaging civil society, scenarios for intelligence Unit in supporting participating promoting community policing agencies, financial intelligence States in attaining membership How we work The OSCE’s response to terrorist These methodologies particular youth, to contribute and tools include: to formulating alternative threats follows a multi-dimensional narratives to violent extremist Interactive training messaging online and offline. approach to ensure that counter- programmes Table top terrorism measures comply with human The multi-year Leaders exercises against Intolerance and rights and fundamental freedoms. Violent Extremism (LIVE) Based on specially designed initiative builds the capacity interactive scenarios, exercises The Unit engages state authorities, of leaders in civil society, have been developed to especially youth, women, increase the resilience of the private sector, civil society, media, and community leaders, to national critical energy speak out and mobilize others infrastructure from terrorist regional and international organizations, against violent extremism cyber-attacks and to promote that leads to terrorism. a whole-of-society approach and develops and implements to address the phenomenon of Awareness-raising foreign terrorist fighters. programmes based on innovative and strategic communications E-learning methodologies and tools. The OSCE United in A publicly accessible, modern Countering Violent Extremism online tool offers up-to-date (#UnitedCVE) campaign seeks course materials and provides to reinforce a global consensus basic knowledge about against VERLT, creating countering the use of the opportunities for the public, in internet for terrorist purposes. Through its #UnitedCVE campaign, the Unit engages young people and Discussion between youth leaders during the LIVE programme pilot. helps raise awareness of how everyone can contribute to preventing violent extremism. Follow OSCE OSCE Secretariat Transnational Threats Department Action against Terrorism Unit Wallnerstrasse 6 1010 Vienna, Austria [email protected] www.osce.org/secretariat/terrorism Organization for Security and Co-operation in Europe.
Load more

Recommended publications
  • Blue Light: America's First Counter-Terrorism Unit Jack Murphy
    Blue Light: America's First Counter-Terrorism Unit Jack Murphy On a dark night in 1977, a dozen Green Berets exited a C-130 aircraft, parachuting into a very different type of war. Aircraft hijackings had become almost commonplace to the point that Johnny Carson would tell jokes about the phenomena on television. But it was no laughing matter for the Department of Defense, who realized after the Israeli raid on Entebbe, that America was woefully unprepared to counter terrorist attacks. This mission would be different. The Special Forces soldiers guided their MC1-1B parachutes towards the ground but their element became separated in the air, some of the Green Berets landing in the trees. The others set down alongside an airfield, landing inside a thick cloud of fog. Their target lay somewhere through the haze, a military C-130 aircraft that had been captured by terrorists. Onboard there were no hostages, but a black box, a classified encryption device that could not be allowed to fall into enemy hands. Airfield seizures were really a Ranger mission, but someone had elected to parachute in an entire Special Forces battalion for the operation. The HALO team was an advanced element, inserted ahead of time to secure the aircraft prior to the main assault force arriving. Despite missing a number of team members at the rally point, the Green Berets knew they were quickly approaching their hit time. They had to take down the aircraft and soon. Armed with suppressed Sten guns, they quietly advanced through the fog. Using the bad weather to their advantage, they were able to slip right between the sentries posted to guard the aircraft.
    [Show full text]
  • Beirut Divided: the Potential of Urban Design in Reuniting a Culturally Divided City
    The Bartlett Development Planning Unit DPU WORKING PAPER NO. 153 Beirut Divided: The potential of urban design in reuniting a culturally divided city Benjamin J Leclair-Paquet DPU Working Papers are downloadable at: www.bartlett.ucl.ac.uk/dpu/latest/ publications/dpu-papers If a hard copy is required, please contact the De- velopment Planning Unit (DPU) at the address at the bottom of the page. Institutions, organisations and booksellers should supply a Purchase Order when ordering Working Papers. Where multiple copies are or- dered, and the cost of postage and package is significant, the DPU may make a charge to cov- er costs. DPU Working Papers provide an outlet for researchers and professionals working in the fields of development, environment, urban and regional development, and planning. They report on work in progress, with the aim to dissemi- nate ideas and initiate discussion. Comments and correspondence are welcomed by authors and should be sent to them, c/o The Editor, DPU Working Papers. Copyright of a DPU Working Paper lies with the author and there are no restrictions on it being published elsewhere in any version or form. DPU Working Papers are refereed by DPU academic staff and/or DPU Associates before selection for publication. Texts should be submitted to the DPU Working Papers' Editors, Dr Camillo Boano and Dr Barbara Lipietz. Graphics and layout: Giorgio Talocci, Camila Cociña and Luz Navarro The Bartlett Development Planning Unit | The Bartlett | University College London 34 Tavistock Square - London - WC1H 9EZ Tel: +44 (0)20 7679 1111 - Fax: +44 (0)20 7679 1112 - www.bartlett.ucl.ac.uk/dpu DPU WORKING PAPER NO.
    [Show full text]
  • Trend Analysis the Israeli Unit 8200 an OSINT-Based Study CSS
    CSS CYBER DEFENSE PROJECT Trend Analysis The Israeli Unit 8200 An OSINT-based study Zürich, December 2019 Risk and Resilience Team Center for Security Studies (CSS), ETH Zürich Trend analysis: The Israeli Unit 8200 – An OSINT-based study Author: Sean Cordey © 2019 Center for Security Studies (CSS), ETH Zurich Contact: Center for Security Studies Haldeneggsteig 4 ETH Zurich CH-8092 Zurich Switzerland Tel.: +41-44-632 40 25 [email protected] www.css.ethz.ch Analysis prepared by: Center for Security Studies (CSS), ETH Zurich ETH-CSS project management: Tim Prior, Head of the Risk and Resilience Research Group, Myriam Dunn Cavelty, Deputy Head for Research and Teaching; Andreas Wenger, Director of the CSS Disclaimer: The opinions presented in this study exclusively reflect the authors’ views. Please cite as: Cordey, S. (2019). Trend Analysis: The Israeli Unit 8200 – An OSINT-based study. Center for Security Studies (CSS), ETH Zürich. 1 Trend analysis: The Israeli Unit 8200 – An OSINT-based study . Table of Contents 1 Introduction 4 2 Historical Background 5 2.1 Pre-independence intelligence units 5 2.2 Post-independence unit: former capabilities, missions, mandate and techniques 5 2.3 The Yom Kippur War and its consequences 6 3 Operational Background 8 3.1 Unit mandate, activities and capabilities 8 3.2 Attributed and alleged operations 8 3.3 International efforts and cooperation 9 4 Organizational and Cultural Background 10 4.1 Organizational structure 10 Structure and sub-units 10 Infrastructure 11 4.2 Selection and training process 12 Attractiveness and motivation 12 Screening process 12 Selection process 13 Training process 13 Service, reserve and alumni 14 4.3 Internal culture 14 5 Discussion and Analysis 16 5.1 Strengths 16 5.2 Weaknesses 17 6 Conclusion and Recommendations 18 7 Glossary 20 8 Abbreviations 20 9 Bibliography 21 2 Trend analysis: The Israeli Unit 8200 – An OSINT-based study selection tests comprise a psychometric test, rigorous Executive Summary interviews, and an education/skills test.
    [Show full text]
  • North Korea's Political System*
    This article was translated by JIIA from Japanese into English as part of a research project to promote academic studies on the international circumstances in the Asia-Pacific. JIIA takes full responsibility for the translation of this article. To obtain permission to use this article beyond the scope of your personal use and research, please contact JIIA by e-mail ([email protected]) Citation: International Circumstances in the Asia-Pacific Series, Japan Digital Library (March 2016), http://www2.jiia.or.jp/en/digital_library/korean_peninsula.php Series: Korean Peninsula Affairs North Korea’s Political System* Takashi Sakai** Introduction A year has passed since the birth of the Kim Jong-un regime in North Korea following the sudden death of General Secretary Kim Jong-il in December 2011. During the early days of the regime, many observers commented that all would not be smooth sailing for the new regime, citing the lack of power and previ- ous experience of the youthful Kim Jong-un as a primary cause of concern. However, on the surface at least, it now appears that Kim Jong-un is now in full control of his powers as the “Guiding Leader” and that the political situation is calm. The crucial issue is whether the present situation is stable and sustain- able. To consider this issue properly, it is important to understand the following series of questions. What is the current political structure in North Korea? Is the political structure the same as that which existed under the Kim Jong-il regime, or have significant changes occurred? What political dynamics are at play within this structure? Answering these questions with any degree of accuracy is not an easy task.
    [Show full text]
  • IDF Special Forces – Reservists – Conscientious Objectors – Peace Activists – State Protection
    Refugee Review Tribunal AUSTRALIA RRT RESEARCH RESPONSE Research Response Number: ISR35545 Country: Israel Date: 23 October 2009 Keywords: Israel – Netanya – Suicide bombings – IDF special forces – Reservists – Conscientious objectors – Peace activists – State protection This response was prepared by the Research & Information Services Section of the Refugee Review Tribunal (RRT) after researching publicly accessible information currently available to the RRT within time constraints. This response is not, and does not purport to be, conclusive as to the merit of any particular claim to refugee status or asylum. This research response may not, under any circumstance, be cited in a decision or any other document. Anyone wishing to use this information may only cite the primary source material contained herein. Questions 1. Please provide information on suicide bombs in 2000 to January 2002 in Netanya. 2. Deleted. 3. Please provide any information on recruitment of individuals to special army units for “chasing terrorists in neighbouring countries”, how often they would be called up, and repercussions for wanting to withdraw? 4. What evidence is there of repercussions from Israeli Jewish fanatics and Arabs or the military towards someone showing some pro-Palestinian sentiment (attending rallies, expressing sentiment, and helping Arabs get jobs)? Is there evidence there would be no state protection in the event of being harmed because of political opinions held? RESPONSE 1. Please provide information on suicide bombs in 2000 to January 2002 in Netanya. According to a 2006 journal article published in GeoJournal there were no suicide attacks in Netanya during the period of 1994-2000. No reports of suicide bombings in 2000 in Netanya were found in a search of other available sources.
    [Show full text]
  • The Vietnam War 47
    The Vietnam War 47 Chapter Three The Vietnam War POSTWAR DEMOBILIZATION By the end of 1945, the Army and Navy had demobilized about half their strength, and most of the rest was demobilized in 1946. Millions of men went home, got jobs, took advantage of the new Servicemen’s Readjustment Act (commonly known as the “GI Bill,” passed in 1944), got married, and started the “baby boom.” Just as in the period following victory in World War I, few Americans paid much attention to national defense. The newly created Department of Defense (formed in the 1947 merger of the War Department and the Navy Department) faced several concurrent tasks: demobilizing the troops; selling off surplus equipment, land, and buildings; and calculating what defense forces the United States actually needed. The govern- ment adopted a postwar defense policy of containing communism, centered on supporting the governments of foreign countries struggling against internal communists. In its early stages, containment called for foreign aid (both military and economic) and limited numbers of military advisers. The Army drew down to only a few divisions, mostly serving occupation duty in Germany and Japan, and most at two-thirds strength. So few men were volunteering for the military that, in 1948, Congress restored a peacetime draft. The world began looking like a more dangerous place when the Soviets cut off land access to Berlin and backed a coup in Czechoslovakia that replaced a coalition government with a communist one. Such events, in addition to the campaign led by Senator Joe Mc- Carthy to expose any possible American communists, stoked fears of a world- wide communist movement.
    [Show full text]
  • International Conference KNOWLEDGE-BASED ORGANIZATION Vol
    International Conference KNOWLEDGE-BASED ORGANIZATION Vol. XXIII No 1 2017 RISK MANAGEMENT IN THE DECISION MAKING PROCESS CONCERNING THE USE OF OUTSOURCING SERVICES IN THE BULGARIAN ARMED FORCES Nikolay NICHEV “Vasil Levski“ National Military University, Veliko Tarnovo, Bulgaria [email protected] Abstract: Outsourcing services in the armed forces are a promising tool for reducing defence spending which use shall be determined by previously made accurate analysis of peacetime and wartime tasks of army structures. The decision to implement such services allows formations of Bulgarian Army to focus on the implementation of specific tasks related to their combat training. Outsourcing is a successful practice which is applied both in the armies of the member states of NATO and in the Bulgarian Army. Using specialized companies to provide certain services in formations provides a reduction in defence spending, access to technology and skills in terms of financial shortage. The aim of this paper is to analyse main outsourcing risks that affect the relationship between the military formation of the Bulgarian army, the structures of the Ministry of Defence of the Republic of Bulgaria and service providers, and to assess those risks. The basic steps for risk management in outsourcing activities are determined on this base. Keywords: outsourcing, risk management, outsourcing risk 1. Introduction It is measured by its impact and the Outsourcing is an effective tool to generate probability of occurrence, and its new revenue, and the risks that may arise, management is the process of identifying, draw our attention to identifying the main analysing, evaluating, monitoring, types of outsourcing risks. This requires the countering and reporting the risks that may focus of current research on studying and affect the achievement of the objectives of evaluating the possibility of the occurrence an organisation and the implementation of of such risks, and the development of a the necessary control activities in order to system for risks management on this basis.
    [Show full text]
  • Unit 6 Light EXPLORE
    EXPLORE Unit Six: Unit Six: Light Table of Contents Light Interdisciplinary Unit of Study I. Unit Snapshot ............................................................................................ 2 II. Introduction ............................................................................................... 4 NYC DOE III. Unit Framework ......................................................................................... 6 IV. Ideas for Learning Centers ......................................................................... 10 V. Foundational and Supporting Texts ...........................................................24 VI. Inquiry and Critical Thinking Questions for Foundational Texts ................. 26 VII. Sample Weekly Plan................................................................................. 29 VIII. Student Work Samples .............................................................................. 35 IX. Supporting Resources ............................................................................... 37 X. Foundational Learning Experiences: Lesson Plans ..................................... 38 XI. Appendices ...............................................................................................54 The enclosed curriculum units may be used for educational, non- profit purposes only. If you are not a Pre-K for All provider, send an email to [email protected] to request permission to use this curriculum or any portion thereof. Please indicate the name and location of your school
    [Show full text]
  • Craig-Cvd506-Manual.Pdf
    .BJOUFOBODFBOE$BSF $BSJOHGPSUIF6OJU *ODMJOBUJPO ti5IFBQQBSBUVTTIBMMOPUCFFYQPTFEUPESJQQJOHPS t%POPUJOTUBMMUIFVOJUJOBOJODMJOFEQPTJUJPO*UJTEFTJHOFE TQMBTIJOHwBOEUIBUOPPCKFDUTGJMMFEXJUIMJRVJETIBMM UPCFPQFSBUFEJOBIPSJ[POUBMQPTJUJPOPOMZ CFQMBDFEPOUIFVOJU t*GBOZUIJOHGBMMTJOUPUIFDBCJOFU VOQMVHUIFVOJUBOEIBWF "WPJE*OUFSGFSFODF JUDIFDLFECZRVBMJGJFEQFSTPOOFMCFGPSFPQFSBUJOHJUBOZ t8IFOZPVQMBDFUIJTVOJUOFBS57 SBEJPPS7$3 UIFQJDUVSF GVSUIFS NBZCFDPNFQPPSBOEUIFTPVOENBZCFEJTUPSUFE*OUIJT DBTF NPWFUIFVOJUBXBZGSPNUIF57 SBEJPPS7$3 $MFBOJOHUIF6OJU t5PQSFWFOUGJSFPSTIPDLIB[BSE EJTDPOOFDUZPVSVOJUGSPN %JTDPOOFDU1PXFS UIF"$QPXFSTPVSDFXIFODMFBOJOH t*GZPVBSFOPUHPJOHUPVTFUIFVOJUGPSBMPOHUJNF CF t5IFGJOJTIPOZPVSVOJUNBZCFDMFBOFEXJUIBEVTUDMPUI TVSFUPEJTDPOOFDUUIFVOJUGSPNUIFXBMMPVUMFU5P BOEDBSFEGPSBTPUIFSGVSOJUVSF EJTDPOOFDUUIF"$QPXFSDPSE NBJOMFBET HSBTQUIFQMVH 6TFDBVUJPOXIFODMFBOJOHBOEXJQJOHUIFQMBTUJDQBSUT JUTFMG OFWFSQVMMUIFDPSE t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
    [Show full text]
  • This Index Lists the Army Units for Which Records Are Available at the Eisenhower Library
    DWIGHT D. EISENHOWER LIBRARY ABILENE, KANSAS U.S. ARMY: Unit Records, 1917-1950 Linear feet: 687 Approximate number of pages: 1,300,000 The U.S. Army Unit Records collection (formerly: U.S. Army, U.S. Forces, European Theater: Selected After Action Reports, 1941-45) primarily spans the period from 1917 to 1950, with the bulk of the material covering the World War II years (1942-45). The collection is comprised of organizational and operational records and miscellaneous historical material from the files of army units that served in World War II. The collection was originally in the custody of the World War II Records Division (now the Modern Military Records Branch), National Archives and Records Service. The material was withdrawn from their holdings in 1960 and sent to the Kansas City Federal Records Center for shipment to the Eisenhower Library. The records were received by the Library from the Kansas City Records Center on June 1, 1962. Most of the collection contained formerly classified material that was bulk-declassified on June 29, 1973, under declassification project number 735035. General restrictions on the use of records in the National Archives still apply. The collection consists primarily of material from infantry, airborne, cavalry, armor, artillery, engineer, and tank destroyer units; roughly half of the collection consists of material from infantry units, division through company levels. Although the collection contains material from over 2,000 units, with each unit forming a separate series, every army unit that served in World War II is not represented. Approximately seventy-five percent of the documents are from units in the European Theater of Operations, about twenty percent from the Pacific theater, and about five percent from units that served in the western hemisphere during World War II.
    [Show full text]
  • U.S. Army Special Forces Group (Airborne) (U)
    CONFIDENTIAL DEPARTMENT OF THE ARMY FIELD MANUAL U.S. ARMY SPECIAL FORCES GROUP (AIRBORNE) (U) Classified by______DA________ Subject to GDS of EO 11652 Automatically Downgrade at Two Year Intervals Declassified on May 3, 1976. DEPARTMENT OF THE ARMY AUGUST 1955 CONFIDENTIAL CONFIDENTIAL CONFIDENTIAL *FM 31-20 FIELD MANUAL DEPARTMENT OF THE ARMY No. 31-20 WASHINGTON 25, D.C., 10 August 1955 U.S. ARMY SPECIAL FORCES GROUP (AIRBORNE) (U) Paragraphs Page PART ONE. SPECIAL FORCES GROUP ORGANIZATION AND MISSION CHAPTER 1. GENERAL............................................. 1-8 5 2. SPECIAL FORCES GROUP HEADQUARTERS AND STAFF Section I. The unit staff........................................ 9-14 11 II. The special staff ................................. 15-26 17 CHAPTER 3. SPECIAL FORCES AD- MINISTRATIVE UNITS............................................ 27-30 28 CHAPTER 4. SPECIAL FORCES OPER- TIONAL TEAMS.......................... 31-35 34 PART TWO. SPECIAL FORCES GROUP FUNCTIONS AND OP-ERATIONS CHAPTER 5. THE SPECIAL FORCES BASE Section I. Introduction........................................ 36-39 38 II. Command and staff structure..............40,41 41 III. Base functions.................................... 42-46 42 CHAPTER 6. SPECIAL FORCES AD- MINISTRATION........................... 47-51 45 7. SPECIAL FORCES IN- TELLIGENCE ............................... 52-54 49 8. SPECIAL FORCES TRAINING.................................... 55-57 51 *This manual supersedes FM 31-20, 1 February 1951. CONFIDENTIAL 1 CONFIDENTIAL CHAPTER 9. SPECIAL FORCES
    [Show full text]
  • 4.1 Unit Circle Cosine & Sine (Slides 4-To-1).Pdf
    The Unit Circle Many important elementary functions involve computations on the unit circle. These \circular functions" are called by a different name, \trigonometric functions." Elementary Functions But the best way to view them is as functions on the circle. Part 4, Trigonometry Lecture 4.1a, The Unit Circle Dr. Ken W. Smith Sam Houston State University 2013 Smith (SHSU) Elementary Functions 2013 1 / 54 Smith (SHSU) Elementary Functions 2013 2 / 54 The Unit Circle The Unit Circle The unit circle is the circle centered at the origin (0; 0) with radius 1. The radius of the circle is one, so P (x; y) is a vertex of a right triangle Draw a ray from the center of the circle out to a point P (x; y) on the with sides x and y and hypotenuse 1. circle to create a central angle θ (drawn in blue, below.) By the Pythagorean theorem, P (x; y) solves the equation x2 + y2 = 1 (1) Smith (SHSU) Elementary Functions 2013 3 / 54 Smith (SHSU) Elementary Functions 2013 4 / 54 Central Angles and Arcs Central Angles and Arcs An arc of the circle corresponds to a central angle created by drawing line segments from the endpoints of the arc to the center. The Babylonians (4000 years ago!) divided the circle into 360 pieces, called degrees. This choice is a very human one; it does not have a natural mathematical reason. (It is not \intrinsic" to the circle.) The most natural way to measure arcs on a circle is by the intrinsic unit of measurement which comes with the circle, that is, the length of the radius.
    [Show full text]