The Structural Collapse of the US Alliance and the Birth of a Tripartite World

July 2026 marks a definitive rupture in international relations as Donald Trump's return triggers the collapse of the post-2016 US-led alliance system, replacing the bipolar US-China dynamic with a tripartite architecture of US, China, and Russia. This shift forces Europe to pursue strategic rearmament for defense sovereignty while eroding the rule-based international order through transactional diplomacy and fragmented sanctions.