Hamas said it had fired rockets into Israel on Saturday in retaliation for a wave of massive air strikes that killed at least 155 people in its Gaza Strip stronghold. Hamas radio said militants had launched dozens of projectiles. In a statement, Hamas's military wing said it had fired off four. The Israeli army said three rockets and two mortars had fallen within Israel. Israeli rescue services said one woman was moderately to seriously wounded when a rocket fell on a house in the southern town of Netivot.