President Donald Trump is growing impatient with efforts to negotiate an end to Russia’s war against Ukraine. Reflecting on negotiations, he recently warned, “There’s a point at which you have to either put up or shut up.” Secretary of State Marco Rubio later backed up that stance by arguing that if a peace deal is “not going to happen, we need to know now because we have other things we have to deal with.”

This frustration is understandable. The Trump administration has expended heavy effort and not insignificant political capital trying to end a war that has run for more than three years and cost hundreds of thousands of lives and many billions of dollars. Trump deserves praise for that effort, but it is an effort that needs to be sustained, not sloughed off after a few weeks.