The fate of his push to end the war will ultimately rest on whether his swift pace can accommodate critical details of a peace that allows Ukraine to survive, secures the borders

U.S.-Russia relations have gone from nowhere to close engagement in a week, since Donald Trump called Vladimir Putin ahead of a putative summit.

Nor did the Europeans show any signs of agreement in Paris on a plan to dispatch forces to Ukraine, if there is a peace deal with Russia that is acceptable to Kyiv. Mr Macron first floated the idea of putting boots on the ground last year,