Returning to our top story now - and most parts of the Libyan capital Tripoli are now reported to be under rebel control. Only five months ago it was Gadaffi's forces who were poised to take control of the rebel stronghold of Benghazi. And they were prevented from doing so when NATO intervened with air strikes. Here's a look back at the events of the last six months in Libya - and the crucial role played by NATO.
