Have no doubt, the Vladimir Putin we’re seeing alongside Xi Jinping this week is the real Vladimir Putin. But it’s a question that is being asked after a range of credible experts have accused the Russian president of sending a body double for a high-profile visit this past weekend in the occupied Ukrainian city of Mariupol.

Reports and conspiracy theories have circulated in the past about the Russian leader using a stand-in because of health or security issues. But the reaction to the Kremlin leader's trip to Mariupol is the first time that multiple credible sources — including those who’ve spent time with him in the past — have cast doubt on the identity of the man who showed up in the southeastern Ukrainian city that Russia took over last spring after a months-long siege.

Russian opposition politician Gennady Gudkov is among those who confidently claim that a Putin look-alike, or rather one of his look-alikes, was in the Ukrainian city.

"Now that there is a war going on, I don't rule out the possibility that someone strongly resembling or disguised as Putin is playing his role," Gudkov said.