A Hamas spokesman says the Islamic terrorist group will carry out harsher attacks on Israeli crossings - worse than recent ones that killed five Israelis. The terrorist, Abu Jandal, told a newspaper linked to Hamas on Monday that previous attacks on Gaza-Israel crossings were just "practice." Two Israeli civilians and three soldiers have been killed in recent attacks. Abu Jandal described the recent attacks as "a walk in the park" and said upcoming attacks would be harsher. The Hamas threats came as former US President Jimmy Carter was saying Hamas would be prepared to live next to Israel in peace in the framework of a Palestinian state.