The Israel Defence Forces said on Saturday they are preparing for a “week of operations” against Palestinian militants, as a barrage of retaliatory rockets were fired from Gaza following the targeted killing of a Islamic Jihad leader. Air-raid sirens sounded in several towns in the south of Israel on Saturday morning, according to a military spokesperson, adding that 190 rockets had been fired from the Gaza Strip since Friday. The Israeli military said that the rockets either fell on empty land or were intercepted by the Iron Dome defence system. Some 36 rockets fell short and landed inside th…