Video: Rocket Attack From Gaza Strip Kills 3 Israelis

JERUSALEM -- Militants in the Hamas-ruled Gaza Strip killed three Israelis on Thursday in a rocket attack likely to deepen a bruising Israeli air, naval and artillery offensive, the most intense assault on the Palestinian territory in four years.

The casualties were the first in Israel since it launched its operation on Wednesday with the assassination of Hamas' top military commander, followed by an onslaught of airstrikes and shelling by tanks and naval gunboats. Eleven Palestinians have been killed and more than 100 wounded in Gaza since the Israeli operation began.