Bomb by Israeli tank kills three

JERUSALEM -- A bomb went off under a tank in the Gaza Strip Thursday, killing three Israelis and wounding two, military officials said, as European diplomats stepped up an offensive to end Israeli-Palestinian violence.

The attack followed an Israeli incursion into Gaza that was denounced by the Palestinian leadership as a "dangerous escalation" in violence. It was Israel's largest operation in Gaza during 16 months of clashes.

Military officials said Palestinians opened fire on a civilian convoy guarded by soldiers and set off a bomb.