Britain wants NATO to have a more powerful strike force in Libya but whether the alliance steps up attacks will depend on what Muammar Gaddafi's forces do, William Hague, the British foreign secretary, said.

Interviewed by Reuters on his way to Wednesday's international meeting on the Libyan crisis in Qatar, Hague called for intensified sanctions on the Libyan government and for a clear statement that Gaddafi must go.

On the sidelines of the summit in Doha, Al Jazeera's James Bays talked to Anders Fogh Rasmussen, the Nato secretary general.