US official says 2,000 soldiers from Fort Bragg, North Carolina, will be sent to Poland; roughly 1,000 Germany-based personnel to be moved to Romania

Vitaly Klitschko says he hopes diplomatic efforts will avert an attack, warning that 'if not, we have to take weapons in our hands'

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

Phone call between Blinken and Lavrov is latest in flurry of diplomatic meetings between senior diplomats from Moscow, Brussels and Washington over fears of looming conflict

Wendy Sherman notes China won't like invasion during Beijing Winter Olympics; US embassy in Kyiv advises citizens to consider leaving 'now'; diplomatic talks continue

Washington and allies worry potential economic and political sanctions over military buildup could lead to Moscow stopping deliveries to continent at height of winter

Biden says he may impose sanctions on Putin personally if Russia invades; other measures could restrict shipments of high-tech US equipment

President Zelensky insists situation under control; Defense Minister Reznikov admits 'risk' but notes massed Russian troops on border are not forming battle groups

EU foreign ministers meet in Brussels in effort to show 'unprecedented unity' in face of Putin's threats to invade Ukraine; Ireland says Russian war games not welcome off its coast

Amid rising fears of Russian attack, Fox News says State Department told relatives of diplomats to begin leaving as soon as Monday; spokesperson: 'Nothing to announce at this time'