Israeli Defense Minister Ehud Barak (R) receives New York City Mayor Michael Bloomberg at his office in Tel Aviv on January 4, 2009, following an invasion by Israeli ground forces of the Gaza Strip after an eight-day aerial bombing blitz in a bid to halt rocket and mortar fire from militants inside the enclave. More than 500 Palestinians have been killed so far in the deadly offensive on Gaza. Getty Images logo Getty Images 37 months ago

Israeli Defense Minister Ehud Barak (R) receives New York City Mayor Michael Bloomberg at his office in Tel Aviv on January 4, 2009, following an invasion by Israeli ground forces of the Gaza Strip after an eight-day aerial bombing blitz in a bid to halt rocket and mortar fire from militants inside the enclave. More than 500 Palestinians have been killed so far in the deadly offensive on Gaza.