Donald Trump's return to the U.S. presidency is set to disrupt trans-Atlantic relations, likely escalating trade tensions, weakening already limited cooperation on climate and tech policy, and straining EU unity on defense and support for Ukraine. As former U.S. President and Republican candidate Donald Trump's victory in the U.S. Nov. 5 presidential election began emerging, multiple EU leaders congratulated the new president and pledged to continue cooperation between Europe and the United States. German Chancellor Olaf Scholz said the United States and Germany should work together to "promote prosperity and freedom" under a Trump presidency, while French President Emmanuel Macron wrote on X that he was "ready to work together" with the new president, as they did during Trump's first term in office.