President Donald Trump said he and Russian President Vladimir Putin agreed during a lengthy phone call Thursday to meet in Budapest to continue discussions about ending the war in Ukraine.

“I believe great progress was made with today’s telephone conversation,” Trump wrote in a social media post.

The meeting with Putin in Budapest, the president said, would follow an initial round of meetings between Secretary of State Marco Rubio with Russian counterparts next week at a location to be determined.

The call with Putin came ahead of Trump’s scheduled White House meeting Friday with Ukrainian President Volodymyr Zelenskyy, who has said he’s hoping to convince the U.S. to provide Tomahawk missiles and other weapons systems that would enable Ukraine to attack deeper into Russia.