President Donald Trump’s rapprochement with Russia has some experts suggesting he might be trying to do a “reverse Nixon” and isolate Beijing by courting Moscow.

The Chinese and Russian leaders reaffirmed their relationship in a video call on Monday, an apparent rebuff to the idea that the Trump administration could drive a wedge between them.

China’s President Xi Jinping had a call with Russia’s President Vladimir Putin on Monday and said he was pleased with Moscow’s efforts to hold a summit with the U.S.