Russia

Ukraine's Territorial Defense Forces were set up to train part-time reservists but last year the drills were opened to ordinary citizens — to foster popular resistance if the military is overwhelmed.

The tests of the fast and maneuverable class of weapons that purport to be able to evade missile defense systems, has garnered the attention of the White House, which responded with new sanctions.

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.

The U.S. and its European allies want Russia to reduce troop buildup along the Ukraine border. Russia wants U.S. troops out of Eastern Europe. Both sides say those demands are non-starters.

Russia's Interfax news, citing the military, reports that 10,000 troops are returning to their "permanent deployment points" from the border region.

Deputy Foreign Minister Sergei Ryabkov accused Western allies of continuously pushing the envelope in relations with Russia.

Russian President Vladimir Putin once floated the prospect of his country joining NATO.

When Vladimir Putin assumed power in 1999, he immediately sent the Russian military into Chechnya. For more than 20 years, Putin has repeatedly looked to the military to strengthen his rule.

Military experts say Russia would face stronger resistance from Ukraine than it did when it annexed the Crimean Peninsula seven years ago

The White House wants to boost global commitments to human rights and fighting corruption. But as the summit convenes, American democracy itself is under pressure.

Biden told Putin in a call that if Russia invades Ukraine, the U.S. and allies would apply painful economic sanctions, said Jake Sullivan, Biden's national security adviser.

In a scheduled video call Tuesday with the Russian president, Biden will outline economic sanctions and stepped-up support for NATO allies if Russia invades, a senior administration official says.