Measures target Russian banks, oligarchs and high-tech sectors, though not Russian leader directly; Biden reassures that no military forces will be sent to Ukraine

With inflation at record highs, a global pandemic and an energy shortage throughout Europe, the right way to punish one of the world’s major economies can be complex to gauge

'We are united in our support of Ukraine,' US president says, adding that he's sending 'defensive' forces to the Baltics, but clarifies: 'We have no intention of fighting Russia'

Washington said to have urged Ukraine's Zelensky to move to west of country for safety; US envoy to UN: Putin's 'outrageous, false claims' are creating pretext for war

As Russian troops amass on the Ukrainian border, Joseph Weisberg, author of 'Russia Upside Down,' argues that a little empathy - and eased sanctions - could go a long way

Moscow says American ambassador should head home for consultations, warns it may later take 'painful measures' against US business interests

US president calls the move a 'measured and proportionate' response to Russian actions, says he invited Putin to hold a summit to 'launch a strategic stability dialogue'

Measures also target Moscow’s ability to borrow money; Russia denounces move, warns of retaliation

White House said planning to expel Russian diplomats, announce financial measures over alleged election interference and SolarWinds cyberattack

Iran, China and other countries also expected to be targeted in wake of intelligence report identifying attempts to sway 2020 presidential vote