One Palestinian was killed and three were wounded as the result of an Israeli air strike over the Gaza Strip on Monday, Palestinian medical sources said. Also today, Israeli Premier Benjamin Netanyahu warned Hamas leaders that his country will not let mortar fire from the Strip go unpunished. \"We\'ve got Hamas, supported by Iran, firing rockets at us. We\'re not going to let anyone arm themselves and fire rockets on us and think that they can do this with impunity. They\'re not going to get away with it,\" he said on meeting with the Middle East Quartet envoy Tony Blair.