Zelenskyy, who was not invited to Alaska for the summit, said he held a “long and substantive” conversation with Trump early Saturday.

The unpredictability of how the Alaska meeting will play out has fueled fears that the U.S. and Russia could coerce Ukraine into an unfavorable deal.

Zelensky said he had been invited to the White House after a 'long and substantive' conversation with Trump which lasted for more than 90 minutes and later involved European…