A Palestinian boy uses a torch to burn a mock Israeli army post as part of a drill during a graduation ceremony for members of Palestinian National Security Forces loyal to Hamas, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





Members of Palestinian National Security Forces loyal to Hamas demonstrate their skills during a military graduation ceremony, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





A member of Palestinian National Security Forces loyal to Hamas hangs a Palestinian flag after removing an Israeli flag from a mock Israeli army post as part of a drill during a graduation ceremony, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





A Palestinian boy uses a torch to burn a mock Israeli army post as part of a drill during a graduation ceremony for members of Palestinian National Security Forces loyal to Hamas, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





Members of the Palestinian Hamas security forces take part in a graduation ceremony in Gaza City on January 22, 2017. (Photo by Mahmud Hams/AFP Photo)





Members of Palestinian National Security Forces loyal to Hamas performs impressive martial arts skills during a military graduation ceremony, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





Members of the Palestinian Hamas security forces show their skills as they take part in a graduation ceremony in Gaza City on January 22, 2017. (Photo by Mahmud Hams/AFP Photo)





Members of Palestinian National Security Forces loyal to Hamas breaks burning bricks during a military graduation ceremony, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





A Palestinian man helps a boy set fire to an Israeli flag during a graduation ceremony for Hamas security forces in Gaza City on January 22, 2017. (Photo by Mahmud Hams/AFP Photo)





Members of Palestinian National Security Forces loyal to Hamas march in formation during a military graduation ceremony, in Gaza City January 22, 2017. (Photo by Suhaib Salem/Reuters)





Members of the Palestinian Hamas security forces show their skills as they take part in a graduation ceremony in Gaza City on January 22, 2017. (Photo by Mahmud Hams/AFP Photo)