'Muhammad-mocking movie to flare up troubled region' [James Corbett © RT]

There's been an attack on the US embassy in Beirut. This comes after President Obama confirmed that his ambassador to Libya - and three other officials - were killed in the city of Benghazi. Christopher Stevens was at the US consulate there when an armed mob stormed the compound, in protest at an American film which has been described as an insult to Islam.

A team of US anti-terror marines is reportedly heading to Libya to beef up security for diplomats. RT talks to independent news editor James Corbett.