Free Syrian Army fighters pray in the southern countryside of Idlib
Free Syrian Army fighters pray in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT RELIGION)
A young Free Syrian Army fighter and a fellow fighter sit on a motorbike while holding their weapons in the southern countryside of Idlib
A young Free Syrian Army fighter (L) and a fellow fighter sit on a motorbike while holding their weapons in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters stand as a fellow fighter holds a rocket-propelled grenade (RPG) along a street in the southern countryside of Idlib
Free Syrian Army fighters stand as a fellow fighter holds a rocket-propelled grenade (RPG) along a street in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters install an anti-aircraft weapon on top of a vehicle in the southern countryside of Idlib
Free Syrian Army fighters install an anti-aircraft weapon on top of a vehicle in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters install an anti-aircraft weapon on top of a vehicle in the southern countryside of Idlib
Free Syrian Army fighters install an anti-aircraft weapon on top of a vehicle in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighters salvages parts from a damaged vehicle in the southern countryside of Idlib
Free Syrian Army fighters salvages parts from a damaged vehicle in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Free Syrian Army fighter walks past a vehicle mounted with an anti-aircraft gun in the southern countryside of Idlib
Free Syrian Army fighter walks past a vehicle mounted with an anti-aircraft gun in the southern countryside of Idlib May 25, 2014. Picture taken May 25, 2014. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
UNHCR calls for more to be done for Syrian refugees with cancer
UNHCR's top medical expert, in an article for The Lancet, says the number of refugees with cancer is overwhelming health systems in Jordan and Syria.