Coalition to strike pro-Gaddafi forces in Libya

British forces are taking part in an international campaign against pro-Gaddafi forces.

More than 100 Tomahawk cruise missiles have been launched from British submarines and American warships targetting Libyan air defences.

And there have been a series of air strikes by French warplanes which have destroyed a number of Libyan tanks and armoured vehicles.

The launch of UK operations was announced by the prime minister after he chaired a meeting of the Government's Cobra emergency committee.

So what kind of military campaign can we expect and who is involved?

The BBC's Defence Correspondent Caroline Wyatt has the details.