Israeli Prime Minister Benjamin Netanyahu, left, walks with U.S. ambassador James Cunningham during a reception for U.S. Independence Day at Cunningham's residence in Herzliya, near Tel Aviv, Wednesday, July 1, 2009. Netanyahu warned Wednesday that the world order could break down if tyrannical regimes obtain weapons of mass destruction, speaking at the residence of the U.S. ambassador during a reception for the upcoming U.S. Independence Day.