Two Palestinian terrorists have been killed while attempting to carry out separate attacks, rattling the five-month-old cease-fire. First, Israeli troops shot a Palestinian gunman who tried to infiltrate a Jewish settlement in the Gaza Strip. The army said the Islamic Jihad terrorist was armed with grenades, a bomb and an assault rifle. After that, Israeli soldiers killed another gunman outside the town of Nablus in Samaria. The army said it fired at two gunmen who tried to attack a busload of Jewish worshippers on their way to prayers at nearby Joseph's Tomb. The dead terrorist was identified as a 16-year-old member of the Al Aksa Martyrs Brigades who was wanted by Israel.