The Western response to Russia’s aggression against Ukraine was significant in its provision of weapons, imposition of sanctions, and support for refugees. This essay argues that a postmodern attitude can explain not only why Putin instigated the war, but also why European NATO and EU member states were unprepared for it. This lack of preparedness presents a significant obstacle to the creation of a new European security order. The postmodern attitude, characterised by a rejection of objective truths and a focus on individual experiences and interpretations, has led to a lack of consensus and a fragmentation of the European security community. As a result, member states were unable to effectively respond to Russia’s actions and were caught off guard by the invasion. The ongoing conflict in Ukraine highlights the need for a renewed focus on the importance of objective truths and a unified approach to security in Europe.