(CNN) President Donald Trump and Russian President Vladimir Putin are planning to meet around the time of Trump's trip to the UK and the NATO summit in mid-July, according to two diplomatic sources familiar with the matter.

One diplomatic official told CNN that the Trump administration wants the meeting in Washington, but Moscow has insisted on neutral ground. The official added that Vienna is the likely location.

No official announcements have been made.

Kremlin spokesperson Dmitry Peskov said Thursday that White House national security adviser John Bolton plans to visit Moscow. The National Security Council confirmed later Thursday that Bolton is scheduled to travel to Moscow later this month to discuss the potential meeting.

"As far as we know, such a trip will take place," Peskov said. "So far that's all we can say."

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