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.

Meet the Press moderator Kristen Welker joins Sunday TODAY’s Willie Geist to discuss the White House potentially inviting Ukraine President Volodymyr Zelenskyy to President Donald Trump's meeting with Russia’s Vladimir Putin in Alaska.

Next week, US President Donald Trump and Vladimir Putin will hold a historic meeting that could mark the start of ending the war in Ukraine — but the terms of future peace raise many questions. RBC-Ukraine has compiled everything known about the upcoming summit.