MOSCOW, Russia. (CNN) -- Russian President Vladimir Putin told his Chinese counterpart Xi Jinping in a virtual meeting Friday that their partnership was more important than ever in the face of "unprecedented pressure" from the West, as Moscow's invasion of Ukraine leaves it increasingly isolated on the global stage.
While Putin's war in Ukraine rages on and Xi grapples with an unprecedented Covid outbreak, a call between the two leaders on Friday underlined their mutual reliance amid mounting crises at home.
In opening remarks broadcast on Russian state TV, Putin said that the stabilizing force of the Russia-China relationship was becoming even more critical against the backdrop of growing geopolitical tensions.
The Russian leader described relations between the two nations as "the best in history," saying they could "withstand all tests," and invited Xi to visit Moscow in the spring of 2023.
"We share the same views on the causes, course and logic of the ongoing transformation of the global geopolitical landscape," Putin said.
"In the face of unprecedented pressure and provocations from the West, we defend our principled positions and defend not only our own interests, but also all those who stand for a truly democratic system and the right of countries to freely determine their own destiny."
Putin added that the two countries would strengthen cooperation between their armed forces, and pointed to growth in trade despite "unfavorable market conditions," alluding to the waves of economic sanctions Russia has faced since invading Ukraine.
Xi echoed Putin's message of unity, saying that the two countries should "strengthen strategic coordination" and "inject more stability into the world," according to Chinese state media Xinhua.
China is "ready to work" with Russia to "stand against hegemonism and power politics" to oppose unilateralism, protectionism and "bullying," as well as to safeguard sovereignty, security, international equity and justice, Xi said, Chinese state media reported.
Xi also said China is ready to resume normal cross-border travel with Russia and other countries "in an orderly manner," Xinhua reported.
Moscow and Beijing have drawn closer in recent years, with Xi and Putin declaring the two countries had a "no limits" partnership weeks before Russia invaded Ukraine in February. Analysts on Friday were watching for any sign that the Chinese leader's support for his Russian counterpart had softened.
China has repeatedly refused to condemn the aggression, instead repeatedly laying blame for the conflict on NATO and the United States -- and remaining one of Russia's key remaining supporters as outrage over the invasion builds, leaving Russia increasingly on its own.
But more than 10 months into the grinding war, the world looks much different -- and the dynamic between both partners has shifted accordingly, experts say.