Key leaders of the U.S. Congress want U.S. President Barack Obama to provide funds to help Israel, should it request it, to produce more batteries of the Iron Dome counter-rocket system. Israel's air force has three batteries deployed to protect cities in the southern Negev Desert against rockets fired by Palestinian militants in the Hamas-ruled Gaza Strip but budget problems mean it can't fund more batteries needed to shield the rest of the country. Iron Dome, which racked up a 90 percent kill rate against Palestinian Qassam and Grad rockets in recent weeks, was developed by Rafael Advanced Defense Systems...