Acting American ambassador prepares for thousands of potential evacuees
The most senior U.S. diplomat in Ukraine tells CBS News' Charlie D'Agata that Americans should leave the country now, before any potential hostilities. This, as new satellite images show what the U.S. calls a continuing buildup of Russian troops on Ukraine's borders. D'Agata also speaks with a family that fled west to Lviv from Kyiv to protect their small children.