Ukraine conflict: Families begin to leave Donetsk

The Ukrainian government has delivered a stark warning to pro-Russian separatists in Donetsk that it has a plan to take back the city.

The Ukraine military has already pushed the rebels out of their best-fortified stronghold in the town of Sloviansk and in Artemivsk.

Steve Rosenberg reports from Donetsk, where many shops and banks have closed for business as people begin to leave the city.