“…Against that backdrop, it is no surprise that the EU's most important and most developed counter-terrorism relationship has been with the USA, where cooperation has reached a high level of intensity, ranging from dialogues to various agreements that require the transfer of personal data. This importance has been reflected in the literature on transatlantic ties, where the security relationship -often in relation to terrorism -has become a major area of research in the last few years (Argomaniz, 2009b;Kaunert, 2010aKaunert, , 2010bMacKenzie, 2010MacKenzie, , 2012Monar, 2010;Occhipinti, 2010;Pawlak, 2009a;Rees, 2006Rees, , 2009Rees and Aldrich, 2005;MacKenzie, 2011, 2012;Tzanou, 2015;Soare, 2020). Importantly, prior to 9/11, there was almost no cooperation between the EU and the USA on security matters, to the frustration of Washington.…”