Germany is the key power in Europe today. The future of the continent—and America's relations with it—will hinge on decisions made in Berlin. Yet the relationship is under mounting strain amid the war with Iran, President Trump's claims on Greenland, and possible withdrawals of U.S. troops from Germany. Has longstanding trust between Washington and Berlin been irreparably broken? What can Germany and America do to capitalize on shared interests in the future? Is it even worth trying?