The battle for Tripoli seems to be in its final stages tonight, with rebels taking over Colonel Muammar Gaddafi's fortified compound in the city, one of the final areas under the Libyan leader's control. Tonight we are dedicating the whole programme to the day's events and asking what next for Libya? We will be hearing from key players and our reporters on the ground as we examine the prospects for the last pockets of pro-Gaddafi resistance being swiftly eradicated, for a peaceful transition of power once the fighting stops and what is likely to happen to Colonel Gaddafi - whose whereabouts is currently unknown. We will look back over more than 40 years of Gaddafi rule, asking if this should be a day for celebration or not, and forward to what kind of Libya we are likely to see without Gaddafi at the helm.