Libya conflict: Interim fighters launch attack on Sirte
In Libya, thousands of fighters have begun what they hope will be a final attack on Sirte, bombarding the city with tank shells, mortars and rockets.
Thousands of civilians have left the city, but humanitarian workers fear there are many more unable or unwilling to leave.
Jonathan Head, who is with some of the fighters outside the city, said they were "sending in pretty much everything they've got".