Charles Maynes

Biden's calls with Volodymyr Zelenskyy and Russian President Vladimir Putin this weekend come as U.S. officials warn that Russia has amassed enough troops and equipment to invade Ukraine any day.

President Joe Biden and Russian President Vladimir Putin spoke for just over an hour Saturday but made no progress toward heading off what seems to be an impending Russian invasion of Ukraine.

In Rostov-on-Don, the largest Russian city near the border with Ukraine, some residents are bracing for a possible war. But many others are going on with their normal routines.

Russian President Vladimir Putin and Chinese leader Xi Jinping are meeting Friday in Beijing on the eve of the Winter Olympics.

British Prime Minister Boris Johnson flew to Kyiv to meet with Ukrainian President Volodymyr Zelensky. In Moscow, Russian President Putin made his first public remarks on the crisis since late 2021.

Russian President Vladimir Putin weighed in for the first time on answers from the U.S. and NATO to Russia's security proposals. Other signals from the Kremlin are encouraging.

The U.S. and NATO delivered formal written responses Wednesday to a series of far-reaching Russian demands concerning Ukraine. The Kremlin's response so far seems skeptical.

The U.S. and NATO are readying troops for possible deployment to Eastern Europe to deter Russia from invading Ukraine. The Kremlin says Western governments and media are creating "hysteria."

While the U.S. sounds the alarm about the threat to Ukraine posed by tens of thousands of Russian troops on the border, Russia says it is NATO's military build-up that's stoking tensions.

Tensions between the U.S. and Russia over Ukraine seem to have ratcheted up.

The U.S., Russia and European powers have tussled over the post-Cold War era in a series of talks that ended with no resolution to the standoff over Ukraine — which Russia is threatening to invade.

A deep divide remains between Russia and NATO over Ukraine. There is hope that the third and final round of talks will bring a breakthrough.

Russia forced the West into a flurry of diplomacy this week with its massive troop buildup on its border with Ukraine. Here's a short guide to what the Kremlin wants.

A Russian delegation was in Brussels Wednesday to meet with NATO officials, who are trying to head off an invasion of Ukraine by Russian troops massed on the border.

A Russian-led force of some 2,500 troops arrived there last week, at the invitation of the president amid a wave of popular unrest.

Russian troops are helping put down anti-government protests in neighboring Kazakhstan. The crisis threatens to be a distraction for Russia as it squares off with the U.S. over Ukraine.

Protesters have stormed government buildings in Kazakhstan, angered over soaring fuel prices and an entrenched post-Communist political elite in the former Soviet Republic.

President Biden spoke with Russian President Vladimir Putin in a call Thursday as tensions mount between the Ukraine and Russia. The White House says it's "gravely concerned" about the situation.

President Biden and Russian President Putin on Thursday are expected hold their second call this month — amid Russia's continued military build-up near its border with Ukraine.

Russia's highest court ordered Memorial International to close, alleging violations of foreign funding rules. The real reasons are more complex.