Niall Ferguson's book "Colossus" discusses the role of soldiers in a Europe that has proclaimed lasting peace and no longer feels a direct threat from Russia. He suggests that the relevance of military forces becomes uncertain when they are not engaged in peacekeeping missions, raising questions about their purpose and utility.

The context of European stability leads to an existential inquiry for military personnel, as their traditional functions are challenged by a lack of conflict. Ferguson's insights prompt reflection on the changing nature of defense in a post-Cold War era, where the necessity of armed forces is being reconsidered in light of political peace across the continent.