Two decades into the ‘war on terror’, attention is rapidly shifting away from terrorism. Increasing geopolitical competition between the US and China and Russia’s war in Ukraine prompted talk about a watershed moment in global politics marked by a return of great power competition. To what extent has this paradigm shift – from terrorism to ‘traditional’ considerations of military security from external invasion – taken place in Southeast Asia? Building on securitisation theory, this article argues that the war on terror did not mark a universal historical-political period as it is often presented. In Southeast Asia, so-called non-traditional threats such as terrorism have concerned states since their independence. Therefore, Southeast Asia continued to prioritise ‘traditional’ security threats alongside ‘non-traditional’ ones in what is commonly described as its comprehensive approach to security. Consequently, when the ‘return to geopolitics’ began influencing military doctrine and preparation amongst NATO countries, a similar shift was absent in Southeast Asia. We argue that the region has seen varied emphases on non-traditional versus traditional security threats but did not experience the paradigm shift suggested by the US-dominated security narrative. Southeast Asia’s comprehensive security constellation underscores the need for a more pluralistic and eclectic approach to the study of international relations.