Leaders from major European allies, NATO and the European Union are traveling to Washington, D.C., to join Ukrainian President Volodymyr Zelenskyy at his Monday meeting with President Donald Trump—setting up what appear to be crucial talks as Trump pushes for a ceasefire in the war in Ukraine that has been raging since the Russian invasion in 2022.

Leaders from Britain, France, Germany, Italy and Finland are rallying around the Ukrainian president after his exclusion from Trump’s summit on Friday with Russian President Vladimir Putin.