Libya: the fighting escalates

A Libyan rebel, a member of the Warfala tribe, parades on a horse in Benghazi Photograph: Patrick Baz/AFP/Getty Images

In this photo taken during a government-organised visit for foreign media, pro-Gaddafi soldiers rest in the main square of Zawiya
Photograph: Rex Features/Keystone USA-Zuma

Smoke rises as a Libyan jet fighter drops a bomb on the rebel fighters' position on the outskirts of the eastern oil port town of Ras Lanuf Photograph: Gianluigi Guercia/AFP/Getty Images

In this picture taken on a guided government tour, supporters of the Libyan leader Colonel Gaddafi chant slogans after the recapture of Martyr's Square by government forces in the centre of Zawiyah
Photograph: Reuters

A fighter paints a poster in the rebel stronghold of Benghazi Photograph: Finbarr O'Reilly/Reuters

Libyan rebels pour water over the head of a shell-shocked comrade on the frontline in Ras Lanuf Photograph: John Moore/Getty Images

A man pushes his belongings towards a United Nations displacement camp in Ras Jdir, Tunisia. Tens of thousands of foreign workers from Egypt, Tunisia, Bangladesh, Sudan and other countries are fleeing to the Tunisian border to escape the fighting in and around the Libyan capital of Tripoli Photograph: Dan Kitwood/Getty Images

Rebel fighters flee a government airstrike on the frontline in Ras Lanuf, Libya Photograph: John Moore/Getty Images

An abandoned bullet-ridden car belonging to retreating rebel forces sits on a road leading to the flashpoint Libyan town of Ras Lanuf Photograph: Marco Longari/AFP/Getty Images

Libyan rebels parade in a convertible car in Benghazi Photograph: Patrick Baz/AFP/Getty Images

Caricatures of Muammar Gaddafi are posted on a wall in the rebel stronghold of Benghazi Photograph: Finbarr O'Reilly/Reuters

A lone rebel mans the last checkpoint before the flashpoint Libyan town of Ras Lanuf Photograph: Marco Longari/AFP/Getty Images