It was the latest in a series of almost weekly large-scale missile and drone attacks. President Trump said he “didn’t make any progress” with President Vladimir V. Putin of Russia.

The world leaders spoke on the phone for the sixth time since Trump's return to presidency as the topics of Ukraine and Iran were high up on the agenda

The president repeatedly said on the campaign trail that he would bring an end to the war in the first 24 hours of his second term.