Palestinians attend the funeral in Ramallah of Adam Al-Julani, from the town of Al-Ram, and Yasser Al-Kasbah, from Qalandia camp, after they were killed on Sunday during clashes with Israeli forces that took place near the Qalandia military checkpoint, north of Jerusalem. Hamas has called on "resistance fighters" in the occupied West Bank and in Arab and Islamic nations to join its "Operation Al-Aqsa Flood", a surprise attack that shocked Israel. IMAGES