Donald Trump’s term as President of the United States coincided with a demanding period in transatlantic relations fraught with tensions and personality clashes. Euro-American ties frayed as both sides became embroiled in bitter recriminations over NATO, the European Union, transatlantic trade and the norms of the liberal order. Many of the conflicts could have been avoided had the parts chosen to avoid a polarization of positions. They did not. This paper traces the crisis and its consequences, suggesting that European and Americans share responsibility for the most turbulent crisis witnessed in the Atlantic community since the Second World War.