As losses mount, the pace of Russia's advance has at times been slower than the Battle of the Somme during World War I, a report says.

Zelenskyy had rejected a similar proposal last year, saying he could not to go to the capital of a country that was launching daily missile attacks on Ukraine, and instead suggested that Putin travel to Kyiv.

As the war in Ukraine drags on, Russia has been forced to offer cash bonuses, free prisoners, and lure foreigners to replenish its ranks for deployment to the frontlines. Estimates suggest that Russia has suffered more than 1 million casualties in the ongoing conflict.

The number of Russian and Ukrainian soldiers killed, wounded or missing during the war will reach 2 million by the spring, according to a study published Tuesday. The latest estimates show that Moscow has suffered about 1.

The Trump White House is trying to broker an end to Russia's full-scale invasion of Ukraine, approaching its fourth anniversary.

Russian bombardments have generated more than 1.5 billion tons of war debris across Ukraine, with the mangled heaps multiplying daily as Russian forces relentlessly pummel towns and cities. Along the battle fronts, hundreds of towns languish in ruins.

A new report warns that the number of soldiers killed, injured or missing in Russia's war in Ukraine could reach 2 million by spring