Palestinian youths practice their parkour skills in Khan Younis in the southern Gaza Strip Sept 12, 2012. Some youths, aged between 12 and 23 years old, in Gaza are training in parkour which was developed in France. Parkour is a physical discipline of movement focused on overcoming obstacles. Training is held in cemeteries, and in former Israeli settlements.[Photo/Agencies]

Palestinians mourn outside al-Aqsa hospital in Deir al-Balah in central Gaza Strip after an Israeli air strike Oct 14, 2012. [Photo/Agencies]