The BBC has lodged a formal protest with the Russian authorities after a news team from the BBC's Moscow bureau was attacked in the south of the country.

The cameraman was beaten up and the camera smashed during the attack.

The team was investigating reports of Russian personnel being killed near the border with Ukraine.

Russian servicemen, according to the official line, are not involved in Ukraine, unless they go on holiday or in their spare time.

Steve Rosenberg reports.