On Friday, President Trump and Russian President Vladimir Putin will meet in Alaska where they are expected to discuss the war in Ukraine. NBC News' Jonathan Allen and Keir Simmons report more details.

A diplomatic scramble unfolded Saturday after President Donald Trump announced he would meet his Russian counterpart, Vladimir Putin, next week in Alaska, as European leaders rushed to understand the terms of the meeting and ensure Ukraine was not being left out of discussions about its future.

Earlier Thursday, when pushing back on Kremlin claims that a Trump-Putin summit had been set, a White House official had said Putin would also have to meet with Zelenskyy for the meeting to take place -- something the Kremlin has not been willing to commit to so far.