The two leaders met in Uzbekistan on the sidelines of the eight-nation Shanghai Cooperation Organization (SCO), a security alliance created as a counterweight to U.S. influence that also includes India, Pakistan and four ex-Soviet nations in Central Asia.

Along with Russian's attack on Ukraine, backdropping the summit are the brief eruption not far from the event site of hostilities between Armenia and Azerbaijan, as well as strains in China's relations with Washington, Europe, Japan and India due to disputes over technology, security and territory.

Speaking at the start of his one-on-one talks with Xi, Putin blasted what he described as an "ugly" effort by the United States and its allies to maintain their perceived global domination.