Vladimir Putin and Xi Jinping were to discuss Beijing's propositions to stop the fighting in Ukraine, as the Chinese leader arrived Monday for a landmark visit with his counterpart in Moscow.
China has sought to portray itself as a neutral party in the Ukraine conflict, but Washington has accused Beijing of mulling arms exports to Moscow -- claims China has vociferously denied.
President Xi's three-day trip also serves as a show of support for internationally isolated President Putin, just days after a war crimes tribunal issued a warrant for his arrest over accusation of unlawfully deporting Ukrainian children.
Beijing state media reported President Xi arrived Monday in Moscow by plane for the summit, which is due to include a discussion of China's 12-point position paper calling for dialogue and respect for all countries' territorial sovereignty.
"One way or another, issues raised in (Beijing's) plan for Ukraine will be touched upon during the negotiations. Comprehensive explanations will be given by President Putin" of the Russian position, Kremlin spokesman Dmitry Peskov told reporters.
Vladimir Putin has welcomed Beijing's statements on Ukraine as being indicative of a willingness to play a "constructive role" in ending the conflict, while saying Chinese-Russian relations were "at the highest point".
Kyiv on Monday reiterated calls for Russia to withdraw its forces from Ukraine ahead of Xi Jinping's arrival.
"The formula for the successful implementation of China's 'Peace Plan'. The first and foremost point is the surrender or withdrawal of Russian occupation forces from (Ukrainian territory) in accordance with international law and the UN Charter," the secretary of Ukraine's National Security and Defence Council, Oleksiy Danilov, wrote on Twitter.
A day before President Xi's arrival, a defiant Vladimir Putin went to the Russian-held Ukrainian city of Mariupol -- his first visit to territory captured from Kyiv since Moscow's forces pushed across the border in February 2022.
President Xi's visit also comes just days after the International Criminal Court (ICC) issued an arrest warrant for President Putin on the accusation of unlawfully deporting Ukrainian children.
Beijing said on Monday the ICC should avoid what it called "politicisation and double standards" and respect the principle of immunity for heads of state.
The court should "uphold an objective and impartial stance" and "respect the immunity of heads of state from jurisdiction under international law", foreign ministry spokesperson Wang Wenbin told a regular briefing.
The solution to the Ukraine conflict, he added, remained "dialogue and negotiation".
Neither China nor Russia are signatories to the Rome Statute, which established the ICC.
President Xi, who broke longstanding precedent to begin a third term as president this month, has referred to Mr Putin as an "old friend".
No limits' friendship
Beijing and Moscow have drawn closer in recent years under a "no limits" partnership that has served as a diplomatic bulwark against the West.
China has lambasted what it sees as a US-led campaign of pressure against Russia as Moscow's campaign in Ukraine drags on, instead calling for what it calls "impartial" mediation of the conflict.
"No single country should dictate the international order," President Xi wrote in his Russian media article Monday.
"China has all along upheld an objective and impartial position based on the merits of the issue, and actively promoted peace talks," he added.
Beijing's stance has drawn criticism from Western nations, which say China is providing diplomatic cover for Moscow's armed intervention.
They argue that China's proposals are heavy on grand principles but light on practical solutions.
The United States last week said China's proposals would simply consolidate "Russian conquest" and allow the Kremlin to prepare a fresh offensive.
"We don't support calls for a ceasefire right now," National Security Council spokesman John Kirby said Friday.
Weapons for Russia?
"We certainly don't support calls for a ceasefire that would be called for by the PRC in a meeting in Moscow that would simply benefit Russia," he said, referring to the People's Republic of China, the country's official name.
Washington has also accused Beijing of mulling arms exports to Moscow -- claims China has vociferously denied.
Analysts say Xi Jinping's moves are unlikely to yield a rapprochement in the Ukraine fighting.
Nevertheless, his trip will be closely watched in Western capitals.
The Wall Street Journal has reported that Xi Jinping could also be planning his first call with Ukrainian President Volodymyr Zelensky since the conflict began.
Volodymyr Zelensky has said he would welcome talks with his Chinese counterpart.
Xi Jinping and Vladimir Putin are set to have an "informal" one-on-one meeting and dinner on Monday before negotiations on Tuesday, Mr Putin's top foreign policy adviser Yuri Ushakov told Russian news agencies.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)