Transcript for Crisis in Ukraine: US Weighs New Sanctions Against Russia
To Ukraine next. The white house watching closely. The conflict takes a violent turn this weekend. Masked men, many of them armed, on the move in several cities, taking over government buildings. Tonight, the Ukrainian government announcing a deadline for them to retreat. And the U.S. Weighing new sanctions against Russia. Alex Marquardt with the dramatic pictures from the Ukraine. Reporter: Growing chaos, as tonight the drum beats of war get loud person clashes between pro and anti-russian sides. Today we saw former Ukrainian soldiers who have switched sides. There's no sign of the Ukrainian authorities here. The police station is seized. They're building up the barricad barricades. The large crowd assembled to call for a referendum. Is to determine their future. Ukraine's president has warned he'll launch a full-scale operation to stop this fresh unrest that he and the U.S. Say Russia is behind. It's professional, it's coordinated. There's nothing grassroots seeming about it. Reporter: The white house says more harsh sanctions on Russia could come in the next few days. As satellite photos reveal a huge Russian military buildup along the border with Ukraine. Ukraine's president says the pro testers occupying those government buildings have until tomorrow morning to put down the guns and leave. The fear now is that a crackdown by Ukraine could provoke a Russian invasion.
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