President Vladimir Putin welcomed Xi Jinping at the Kremlin yesterday and pledged that Russia would study China’s peace proposals for Ukraine “with respect.” But Xi did not mention Ukraine at all in his public remarks.

Though the war and the divides that it exposed hung over the meeting, the leaders focused on projecting unity and shoring up their countries’ overall relationship during the three-day summit.

“Dear friend, welcome to Russia,” Putin told Xi, who is the highest-profile world leader to visit since the invasion. Putin said that China took a “fair and balanced position on the majority of international problems.” Xi hailed the two nations as “good neighbors and reliable partners,” Russian state media said.

The state visit, which is being closely watched by Kyiv and its allies, underscores China’s increasingly close ties with Russia. The U.S. has warned that China could go even further than diplomatic or economic support for Russia, possibly by supplying weapons to use in the war.

A peace mission? Chinese officials have tried to cast Xi as a mediator who can broker peace, though Western leaders have expressed doubts. Ukrainian officials have brushed off China’s proposals for peace talks and have insisted that a complete Russian withdrawal is a precondition for negotiations.

War crimes: In its first response to the arrest warrant for Putin issued by the International Criminal Court, China’s foreign ministry said that the court should “avoid politicization and double standards.”

U.S. reaction: Secretary of State Antony Blinken said that Xi’s visit amounts to Beijing’s providing “diplomatic cover for Russia to continue to commit” war crimes.