Rebels close in on Tripoli

As the rebels close in on Tripoli, Muammar Gaddafi, Libya's leader, spoke on State television.

Gaddafi calls the rebels rats, bent on destroying the Libyan people, however, the rebels are calling it "zero hour" for a beleaguered Gaddafi.

It is reported that Gaddafi's troops have abandoned their posts at the city's military airport, but it is understood the base is not in rebel hands.

Al Jazeera's Sonia Gallego reports.