The European political heavy-hitters were left out of President Trump’s summit with Russian President Vladimir Putin last Friday.

President Volodymyr Zelensky of Ukraine said that a full prisoner exchange was also essential to ending the war. Other European leaders also expressed their support for a cease-fire.

Ukrainian and European leaders are likely to push back hard on Russia’s demands, but risk casting themselves – in the eyes of the White House, at least – as obstacles to peace.