Palestinian youths demonstrate their skills during a military-style graduation ceremony after being trained at one of the Hamas-run Liberation Camps, in Khan Younis in the southern Gaza Strip

Palestinian youths demonstrate their skills during a military-style graduation ceremony after being trained at one of the Hamas-run Liberation Camps, in Khan Younis in the southern Gaza Strip January 29, 2015. Hamas’s armed wing organized “Liberation Youths Camps” for young Palestinians aged between 15 and 21 to prepare them to “confront any possible Israeli attack”, Hamas officials said. According to organizers, some 17,000 youths graduated from these camps. REUTERS/Ibraheem Abu Mustafa (GAZA – Tags: POLITICS MILITARY)