SOFIA, Bulgaria—European frustration with the Trump administration boiled over Wednesday as leaders gathered in the Bulgarian capital to tackle two issues straining trans-Atlantic ties: the fate of the Iranian nuclear deal and the threat of U.S. tariffs.
Speaking in Sofia ahead of the summit, which runs through Friday, Donald Tusk, a former Polish prime minister who has championed close U.S. ties since becoming European Council president in 2014, took aim at the “capricious assertiveness” of the U.S. administration.
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