Kamala Harris warns that Russia could see sanctions "like you've not seen before" if it invades Ukraine

As Russian President Vladimir Putin masses troops at the border of Ukraine, now numbering about 100,000, Vice President Kamala Harris says that the U.S. is ready to impose punishing sanctions if Russia invades.

"We are very clear that Russia should not invade the sovereignty of Ukraine, that we must stand up – and we are standing up – for its territorial integrity," she told CBS News chief foreign affairs correspondent and "Face the Nation" moderator Margaret Brennan. "We are working with our allies in that regard, and we've been very...