Pressure grows on Gaddafi amid battle for Ras Lanuf

Forces loyal to Libyan leader Col Muammar Gaddafi have launched further air strikes on the rebel-held oil port of Ras Lanuf, in a renewed offensive.

Meanwhile, plans for a possible no-fly zone over Libya are moving closer in response to air strikes by the Libyan leader against rebel-held areas.

Caroline Hawley reports.