A general view shows fake mosques and buildings at the Urban Warfare Training Centre in Tse’elim camp, southern Israel, on June 19, 2008. The Urban Warfare Training Centre is designed to train combat units for urban warfare by replicating a real urban environment and simulating a variety of battlefield scenarios. A fragile truce between Israel and the Palestinian Islamist movement Hamas came into force in the Gaza Strip on Thursday amid scepticism over how long the Egyptian-brokered deal would hold. AFP POTO/JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)