Ukraine: Street fighting begins in Kyiv; people urged to seek shelter

The clashes followed two days of fighting that resulted in hundreds of casualties and pummeled bridges, schools and apartment buildings. U.S. officials believe Russian President Vladimir Putin is determined to overthrow Ukraine's government and replace it with a regime of his own.

Ukraine: Street fighting begins in Kyiv; people urged to seek shelter
The clashes followed two days of fighting that resulted in hundreds of casualties and pummeled bridges, schools and apartment buildings. U.S. officials believe Russian President Vladimir Putin is determined to overthrow Ukraine's government and replace it with a regime of his own.