US president threatens stiff economic sanctions, military bolstering of NATO allies; Russian leader says NATO to blame for tensions; White House describes meeting as 'useful'

Moscow authorities say Aeroflot plane headed for Russian capital nearly collided with the US air force recon aircraft over Black Sea

Biden warns Washington will make it 'very, very difficult' for Moscow to take military action against its neighbor

Reigniting concerns about escalating arms race in space, missile strike creates 1,500 pieces of space junk, forces astronauts to take cover from move US calls 'reckless'

Federal agents seize files from luxury homes in Washington and New York owned by metal magnate Oleg Deripaska, under investigation for money laundering, extortion and racketeering

Report comes days before Russian leader to host Naftali Bennett in a first meeting expected to focus on Iran; Moscow also hosts Iranian military chief

PM invited to Sochi to discuss Tehran's nuclear program and other regional issues with Russian president, amid reported tensions over Syria policies

Aleksey Burkov, who was arrested in Israel in 2015, lands in Moscow; officials had suggested Russia sought his release last year by offering swap for jailed Israeli backpacker

Development follows recent reports of tensions in the Israel-Russia relationship over policies toward engagement in war-torn country

As State Department envoy, he will be in charge of implementing Nord Stream 2 gas pipeline deal, which critics fear could enable Russia to use energy supplies as a weapon