Israel pounded Gaza for a fifth day Saturday as it vowed ** let-up in its air campaign to halt rocket attacks by militants which has killed more than 120 Palestinians. A defiant Hamas fired five more rockets into Israel as the Islamist movement rejected growing international calls for a halt to hostilities, insisting Israel must act first. Diplomatic efforts to stop the violence saw US President Barack Obama telephoning Israeli Prime Minister Benjamin Netanyahu and Washington offering to use its relationships in the Middle East to bring about a return to calm. "** terrorist target in Gaza is immune." Despite international concern, truce efforts have been unsuccessful, according to Egypt, which has been key in mediating previous ceasefires between Hamas and Israel.




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