The US president will speak to Ukraine's leader in a call on Wednesday, two days before "one-to-one" talks with Putin.

President Donald Trump is set to meet with Russian leader Vladimir Putin in Anchorage, Alaska on Friday in what could ultimately be one of the most consequential bilateral conversations of his second term.

American officials quickly discovered a major snag in planning for the summit: summertime is peak tourist season in Alaska, and options both available and equipped to host the two world leaders were severely limited.