Ukraine alert as politician 'killed'

Ukraine's acting president has relaunched military operations against pro-Russian militants in the east after two men, one a local politician, were found "tortured to death".

Oleksandr Turchynov said the politician, named as Vladimir Rybak, was found near rebel-held Sloviansk.

"The terrorists who effectively took the whole Donetsk region hostage have now gone too far," he said.

The move came as US Vice-President Joe Biden was visiting Ukraine.

Credit: The BBC