By Emma Ashford, a columnist at Foreign Policy and a senior fellow with the Reimagining U.S. Grand Strategy program at the Stimson Center, and Matthew Kroenig, a columnist at Foreign Policy and vice president and senior director of the Atlantic Council’s Scowcroft Center for Strategy and Security.

Donald Trump’s election victory is prompting South Korea to rethink the possibility of sending weapons directly to Ukraine, a decision that could have a big impact on the direction of the war.