Trump and Poroshenko / Photo from

He tweeted a photo showing that Poroshenko is sitting next to Trump, and there are representatives of the two countries, including U.S. Vice-President Mike Pence and Minister of Foreign Affairs of Ukraine Pavlo Klimkin, on both sides.

"After meeting with @VP Ukraine President Poroshenko met with @POTUS @realDonaldTrump," he tweeted on Tuesday evening.