Washington says it is bracing for the worst, urges all Americans to leave the country within 48 hours

UK's Johnson calls crisis most dangerous moment for continent in decades, dispatches soldiers to Poland as icy talks with Moscow flounder; Biden urges Americans to leave Ukraine

At the same time, US president and NATO allies make clear there are no plans to send troops to aid the former Soviet republic against Russian forces

Internal American assessments say Putin has assembled 70% percent of the firepower needed for full-scale assault on Ukraine, but believe still no final decision whether to invade

Putin and Xi issue joint statement opposing NATO expansion and American moves in the Asia-Pacific region

Lavrov, Blinken hold 'fairly candid' phone call on Ukraine tensions, as Russian FM claims 'the West doesn't want to fulfill its obligations' in ensuring Russia's security

56-year-old resident of Holon, a former mayor of a small Russian town nearly 200 miles from Moscow, reportedly awaits extradition to Russia

French officials take a more conciliatory tone during crisis than US and UK counterparts, claim Russian leader expressed 'no offensive plans' in call with French president

Russian foreign minister says US sanctions would amount to complete severing of ties; comments come after Biden warns Kyiv of 'distinct possibility' Moscow could invade

Anatoly Viktorov decries 'hysterical' speculations around expected Russian invasion; blames US and Europe for arming Kyiv and stoking tensions