Yemen ceasefire breaks down - in pictures

2 June: Yemeni soldiers , in Sana'a grasp hands as they join anti-government protesters demanding the departure from office of Yemeni President Ali Abdullah Saleh Photograph: Yahya Arhab/EPA

29 May: Anti-government protesters carry a wounded man during clashes with police in Taiz Photograph: Khaled Abdullah/Reuters

Police use water cannons to disperse anti-government protesters during clashes with police in Taiz Photograph: Khaled Abdullah/Reuters

An anti-government protester carries a wounded man during clashes with police in Taiz Photograph: Khaled Abdullah/Reuters

Armed Yemeni tribesmen stand guard in a street in Sana'a Photograph: Hani Mohammed/AP

An anti-government protester shouts slogans during a demonstration in Sana'a Photograph: Hani Mohammed/AP

Yemeni boys transport cans filled from a water point in Sana'a
Photograph: Ahmad Gharabli/AFP/Getty Images

An anti-government protester shows her hands, which bear Arabic writing reading: "We are all Taiz" during a demonstration in Sana'a
Photograph: Ahmad Gharabli/AFP/Getty Images

A stall displays battery operated lanterns at a market in Sana'a as the city encounters water, electricity and fuel shortages
Photograph: Ahmad Gharabli/AFP/Getty Images

Anti-government protesters carry the body of a fighter loyal to opposition tribal chief Sheik Sadeq al-Ahmar. The fighter was killed during clashes with security forces in Sana'a Photograph: Ammar Awad/Reuters

People flee with their belongings from fighting in the Yemeni capital Sana'a Photograph: Khaled Abdullah/Reuters

30 May: Anti-government protesters shout slogans during a rally in Sana'a Photograph: Ammar Awad/Reuters

31 May: Smoke rises from a residential area in the Yemeni capital Sana'a after fighting erupted between dissident tribesmen and loyalist troops
Photograph: Gamal Noman/AFP/Getty Images

A tribesman injured in clashes with police in Sana'a arrives at a hospital for treatment Photograph: Ammar Awad/Reuters

Anti-government protesters flee after soldiers opened fire in Taiz Photograph: Khaled Abdullah/Reuters

A protester with 'Taiz is the land of freedom' written on his chest shouts slogans during a demonstration calling for the ousting of President Ali Abdullah Saleh in Sana'a Photograph: Ahmad Gharabli/AFP/Getty Images

A wounded man is treated at a hospital after clashes with the police in Sana'a Photograph: Ammar Awad/Reuters

Displaced Yemeni children flee a neighbourhood where there is fighting between the security forces and opposition tribesmen in the capital Sana'a Photograph: Ahmad Gharabli/AFP/Getty Images

Yemeni security forces armoured vehicles take position in a street next to the house of Sheik Sadeq al-Ahmar, the head of the powerful Hashid tribe, during clashes with tribesmen loyal to him in Sana'a, Yemen Photograph: Hani Mohammed/AP

Yemeni youths shout slogans against President Ali Abdullah Saleh as they block a main road in the flashpoint city of Taiz with burning tyres Photograph: Mohammed Huwais/AFP/Getty Images

Government forces outside a government building in Sana'a that was seized back from armed tribesmen Photograph: KeystoneUSA-ZUMA/Rex Features

An anti-government protester shouts slogans during a rally in Sana'a Photograph: Yahya Arhab/EPA