BREAKING WORLD WAR III NEWS: SOME EXPERTS ARE CONCERNED ABOUT THE RUSSIA-UKRAINE WAR AS PRESIDENT XI JINPING AND CHINA WELCOME BELARUSIAN LEADER PRESIDENT ALEKSANDR LUKASHENKO

The announcement of Beijing’s latest high-profile official visitor comes a week after the Biden administration accused China of considering sending lethal military assistance to Russia, a claim that Chinese officials have denied. If the Chinese send arms and ammunition to Moscow’s formations in eastern Ukraine, the supplies would come at a time when both sides are running low on much-needed artillery rounds.

And after Beijing issued broad principles on Friday for trying to end the fighting in Ukraine, Western leaders voiced disappointment at the lack of more specific ideas in their proposal, or any signs that the Chinese leader, Xi Jinping, might be willing to distance himself from Mr. Putin.

Mr. Lukashenko’s office said in a statement that his visit to China would be a chance to offer a “response to acute challenges in the modern international environment.”

In a phone call with Belarus’s foreign minister, Sergei Aleinik, on Friday, his Chinese counterpart, Qin Gang, indicated that Beijing wanted to deepen ties between the two nations and find common ground over Russia’s yearlong war in Ukraine, according to a summary issued by the Chinese Foreign Ministry.

Mr. Qin noted that when they met last year, Mr. Lukashenko and Mr. Xi had proclaimed an “all-weather comprehensive strategic partnership” between their countries. Pakistan is the only other country promised such an august-sounding level of official cooperation by China.

Beijing, Mr. Qin said, “opposes the meddling of external forces in Belarus’s domestic affairs and the illegal imposition of unilateral sanctions on Belarus,” which has been subjected to expanded Western penalties because of its support for Russia.

Yauheni Preiherman, the director of the Minsk Dialogue Council on International Relations, said in written answers to questions that “Minsk has long considered China as a key foreign policy and economic partner and, therefore, invested a lot of time and political effort in deepening relations with Beijing.”

“But under the current conditions of unprecedented Western sanctions against Belarus,” he added, “China’s significance for Minsk has grown even further.”

Mr. Lukashenko appears mainly interested in securing more business and investment agreements, Mr. Preiherman said. “Cooperation in the military-industrial complex can surely be part of that, especially since the two countries already have a track record of cooperation in this realm,” he said.

China may gain symbolic and practical payoffs from closer ties with Belarus.

“Because Belarus is so close to Russia and to the battlefield, Lukashenko has exclusive information about the situation on the battlefield,” Mr. Preiherman said. “I am sure this will be of particular interest to the leaders in Beijing.”

Yet while China has tried with limited success to stabilize relations with the United States and other Western countries in recent months, Mr. Lukashenko will be the latest of several of China’s authoritarian partners who have recently been courted by Beijing — a sign that Mr. Xi is far from making a wholesale shift in China’s allegiances.

This month, Mr. Xi hosted Iran’s president, Ebrahim Raisi, telling him that China “opposes external forces interfering in Iran’s internal affairs and undermining Iran’s security and stability,” according to Xinhua, China’s main official news agency. Another visitor to Beijing this month was Hun Sen, the prime minister of Cambodia, a durable regional supporter of China.

Relations between Belarus and China, strained in previous years over Belarus’s frustrated hopes for expanded Chinese investment and trade, have grown closer since Russia’s invasion, according to a research paper by the Eurasian States in Transition Research Center.