The European Union entered 2026 confronting an increasingly fractured geopolitical environment in which long-standing assumptions about NATO cohesion and overall transatlantic partnership are no longer as reliable as they were. Transatlantic relations, historically the cornerstone of Europe’s security and prosperity, are under visible strain during Trump 2.0. Trade tensions between Washington and European capitals have intensified, with renewed and repeated tariff disputes and threats of economic retaliation.
On security, debates over NATO burden-sharing and the future trajectory of support for Ukraine have further deepened the uncertainty. Former European Commission President José Manuel Barroso recently described Europe-US relations as being at their “lowest moment” since NATO’s founding, reflecting a shift from shared-value alignment to interest-driven transactionalism.
Author: Antonin Nenutil, EIAS Junior Researcher
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