Wounded Syrians seek treatment at a hospital just north of the Turkish border.<br/> <br />Many of them children -- they fled to Turkey for aid after President Bashar al-Assad's air force launched a strike on the rebel-held town of Azaz.<br/> <br />This man, a resident of Azaz, said many more in the city are trapped under debris.<br/> <br />One activist in the town said at least 30 bodies had been found after the attack, and rescuers were searching for more.<br/> <br />Assad's forces have increasingly used helicopter gunships and warplanes against the lightly-armed insurgents -- elements in fresh accusations of war crimes levelled by United Nations human rights investigators on Wednesday.<br/> <br />Opposition sources say at least 18,000 people have been killed since the revolt against Assad began in March 2011.
