British Journal of Political Science (2021), page 1 of 19 doi:10.1017/S0007123420000812 ARTICLE Cyber Terrorism and Public Support for Retaliation – A Multi-Country Survey Experiment Ryan Shandler1* , Michael L. Gross1 , Sophia Backhaus2 and Daphna Canetti1 1School of Political Sciences, University of Haifa, Haifa, Israel and 2Department of Psychology, University of Konstanz, Konstanz, Germany *Corresponding author. E-mail:
[email protected] (Received 14 May 2020; revised 15 September 2020; accepted 19 November 2020) Abstract Does exposure to cyber terrorism prompt calls for retaliatory military strikes? By what psychological mechanism does it do so? Through a series of controlled, randomized experiments, this study exposed respondents (n = 2,028) to television news reports depicting cyber and conventional terror attacks against critical infrastructures in the United States, United Kingdom and Israel. The findings indicate that only lethal cyber terrorism triggers strong support for retaliation. Findings also confirm that anger bridges exposure to cyber terrorism and retaliation, rather than psychological mechanisms such as threat percep- tion or anxiety as other studies propose. These findings extend to the cyber realm a recent trend that views anger as a primary mechanism linking exposure to terrorism with militant preferences. With cyber ter- rorism a mounting international concern, this study demonstrates how exposure to this threat can gener- ate strong public support for retaliatory policies, depending on the lethality of the attack. Keywords: cyber terrorism; terrorism; retaliatory strikes; foreign policy preferences; critical infrastructure; anger Security officials have long warned of the foreboding threat posed by cyber terrorism. In recent years, following a spate of reports about next-generation cyber attacks causing real-world physical destruction, this threat has come of age.