What's happening in the Ukraine war?published at 04:28 British Summer Time 17 May
While Putin is seeking to reinforce Moscow's alliance with Beijing this week, Russian troops have been advancing in their assault on north-eastern Ukraine.
On 10 May, Russian forces penetrated the border area north of Ukraine’s second largest city of Kharkiv. They have since taken a number of villages not far from the frontier, and are trying to push forward as Ukraine’s outgunned forces try to shore up a weakened front line.
Russia’s force in Ukraine now numbers more than half a million, leaving Ukraine’s military outmanned as well as outgunned.
Even as Putin pursues gains on the ground, there have been signs that the Kremlin could be prepared to return to peace talks abandoned two years ago.
In an interview with Chinese state news agency Xinhua earlier this week, Putin said Moscow is "open to a dialogue on Ukraine".
"But such negotiations must take into account the interests of all countries involved in the conflict, including ours," he said.
You can read more about the war in Ukraine here.