A man stands on damaged building at site hit by what activists said was barrel bomb dropped by forces loyal to President al-Assad in Aleppo
A man stands on a damaged building at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Aleppo's Bustan al-Qasr neighborhood May 28, 2014. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
People react among debris of damaged buildings along street at a site hit by what activists said was barrel bomb dropped by forces loyal to President al-Assad in Aleppo
People react among debris of damaged buildings along a street at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Aleppo's Bustan al-Qasr neighborhood May 28, 2014. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
A man carries belongings as he walks among debris of collapsed buildings at site hit by what activists said was barrel bomb dropped by forces loyal to President al-Assad in Aleppo
A man carries belongings as he walks among debris of a collapsed buildings at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Aleppo's Bustan al-Qasr neighborhood May 28, 2014. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
A man holds wounded child at site hit by what activists said was barrel bomb dropped by forces loyal to President al-Assad in Aleppo
A man holds a wounded child at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Aleppo's Bustan al-Qasr neighborhood May 28, 2014. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
People stand near damaged buildings along street at site hit by what activists said was barrel bomb dropped by forces loyal to President al-Assad in Aleppo
People stand near damaged buildings along a street at a site hit by what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad in Aleppo's Bustan al-Qasr neighborhood May 28, 2014. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters and civilians stand on a damaged tank that belonged to forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib
Free Syrian Army fighters and civilians stand on a damaged tank that belonged to forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib May 27, 2014. REUTERS/ Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters and civilians stand on a damaged tank that belonged to forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib
Free Syrian Army fighters and civilians stand on a damaged tank that belonged to forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib May 27, 2014. REUTERS/ Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters walk inside a checkpoint after claiming control of the area in the southern countryside of Idlib
Free Syrian Army fighters walk inside a checkpoint after claiming control of the area in the southern countryside of Idlib May 27, 2014. REUTERS/ Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
People ride on their motorcycle as smoke rises from behind after what activists said was an air strike from forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib
People ride on their motorcycle as smoke rises from behind after what activists said was an air strike from forces loyal to Syrian President Bashar al-Assad in the southern countryside of Idlib May 27, 2014. REUTERS/ Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
ANALYSIS-Boko Haram shows changing al Qaeda threat
NIGERIA-ISLAMISTS (ANALYSIS):ANALYSIS-Boko Haram shows changing al Qaeda threat