President Donald Trump said Friday that he was unsure if he’d be able to end Russia’s war against Ukraine, a far cry from his promise to swiftly put a stop to the conflict that he made on the campaign trail.

Trump said he was "very unhappy" about his call with Putin a day earlier, given what he called the Russian leader's refusal to work on a ceasefire.

The U.S. president described it as a "pretty long call" in which he and Putin discussed a "lot of things, including Iran." "And we also talked about, as you know, the war with Ukr