With war in Europe and a more uncertain world, the transatlantic relationship is becoming more important than ever for Europeans. While the transatlantic partnership remains the strongest interregional relationship in the world, the U.S.'s prioritization of China and changing geopolitical reality pose real obstacles to its continued strength. What impact will a second Trump presidency have on transatlantic cooperation? How can global partners adapt to challenges to multilateralism and protect institutions like NATO? And, what are the implications on Europe’s security and defence?