A Free Syrian Army fighter stands in a vehicle as he mans an anti-aircraft gun in the countryside of Idlib
A Free Syrian Army fighter stands in a vehicle as he mans an anti-aircraft gun in the countryside of Idlib May 23, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY)
An airplane belonging to forces loyal to Syrian President Bashar Al-Assad flies in the sky above the countryside of Idlib
An airplane belonging to forces loyal to Syrian President Bashar Al-Assad flies in the sky above the countryside of Idlib May 23, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT TRANSPORT)
A Free Syrian Army fighter with a weapon runs in the countryside of Idlib
A Free Syrian Army fighter with a weapon runs in the countryside of Idlib May 23, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY)
A Free Syrian Army fighter talks with a fellow fighter as he sits on a vehicle mounted with an anti-aircraft gun in the countryside of Idlib
A Free Syrian Army fighter talks with a fellow fighter as he sits on a vehicle mounted with an anti-aircraft gun in the countryside of Idlib May 23, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY)
A Free Syrian Army fighter stands on a vehicle as he mans an anti-aircraft gun in countryside of Idlib
A Free Syrian Army fighter stands on a vehicle as he mans an anti-aircraft gun in countryside of Idlib May 23, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY)
A woman, affected by what activists say was a gas attack, receives treatment inside a makeshift hospital in Kfar Zeita village in Hama
A woman, affected by what activists say was a gas attack, receives treatment inside a makeshift hospital in Kfar Zeita village in the central province of Hama May 22, 2014. Syrian opposition activists have posted a video of what they say is chlorine gas floating through the streets of a village, the first such footage of an alleged chemical weapon campaign by President Bashar al-Assad. The village of Kfar Zeita, in the central province of Hama 125 miles (200 km) north of Damascus, has been the epicentre of what activists and medics say is two-month-long assault in which chlorine gas canisters are dropped out of helicopters. Picture taken May 22. To match story SYRIA-CRISIS/CHLORINE REUTERS/Badi Khlif (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT HEALTH)
People, affected by what activists say was a gas attack, receive treatment inside a makeshift hospital in Kfar Zeita village in Hama
People, affected by what activists say was a gas attack, receive treatment inside a makeshift hospital in Kfar Zeita village in the central province of Hama May 22, 2014. Syrian opposition activists have posted a video of what they say is chlorine gas floating through the streets of the village, the first such footage of an alleged chemical weapon campaign by President Bashar al-Assad. The village of Kfar Zeita, in the central province of Hama 125 miles (200 km) north of Damascus, has been the epicentre of what activists and medics say is two-month-long assault in which chlorine gas canisters are dropped out of helicopters. Picture taken May 22. To match story SYRIA-CRISIS/CHLORINE REUTERS/Badi Khlif (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT HEALTH)
Women, affected by what activists say was a gas attack, receive treatment inside a makeshift hospital in Kfar Zeita village in Hama
Women, affected by what activists say was a gas attack, receive treatment inside a makeshift hospital in Kfar Zeita village in the central province of Hama May 22, 2014. Syrian opposition activists have posted a video of what they say is chlorine gas floating through the streets of the village, the first such footage of an alleged chemical weapon campaign by President Bashar al-Assad. The village of Kfar Zeita, in the central province of Hama 125 miles (200 km) north of Damascus, has been the epicentre of what activists and medics say is two-month-long assault in which chlorine gas canisters are dropped out of helicopters. Picture taken May 22. To match story SYRIA-CRISIS/CHLORINE REUTERS/Badi Khlif (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT HEALTH TPX IMAGES OF THE DAY)
A girl, affected by what activists say was a gas attack, receives treatment inside a makeshift hospital in Kfar Zeita village in Hama
A girl, affected by what activists say was a gas attack, receives treatment inside a makeshift hospital in Kfar Zeita village in the central province of Hama May 22, 2014. Syrian opposition activists have posted a video of what they say is chlorine gas floating through the streets of the village, the first such footage of an alleged chemical weapon campaign by President Bashar al-Assad. The village of Kfar Zeita, in the central province of Hama 125 miles (200 km) north of Damascus, has been the epicentre of what activists and medics say is two-month-long assault in which chlorine gas canisters are dropped out of helicopters. Picture taken May 22. To match story SYRIA-CRISIS/CHLORINE REUTERS/Badi Khlif (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT HEALTH TPX IMAGES OF THE DAY)