Palestinian militants barraged Israel with nearly 150 rockets on Thursday, killing three people as Israel pressed a punishing campaign of airstrikes on militant targets across the Gaza Strip. Three rockets struck the densely populated Tel Aviv area, and air raid sirens blared in the city as night fell.

The fighting, which has also killed 15 Palestinians in two days, showed no signs of slowing after dark. The attacks in the Tel Aviv area, some of the deepest rocket strikes on record, raised the likelihood of an even tougher Israeli response. Gaza militants launched the rocket barrage in retaliation for Israel's killing of the Hamas military chief in an airstrike on Gaza Wednesday.