Hezbollah guerrillas launched waves of rocket attacks on Israel today on Sunday, killing at least 15 people and injuring many others.
Israeli officials say 12 soldiers died when a rocket exploded in a crowd in the town of Kfar Giladi near the border with Lebanon.
A separate attack on the port city of Haifa killed three people and injured more than 40 others.
The Israeli military says warplanes later destroyed rocket launchers in the Lebanese village of Qana where it says the rockets that hit Haifa had been fired from. Human Rights Watch says an Israeli airstrike on Qana late last month killed 28 people.
The Israeli army says Hezbollah has repeatedly fired missiles from the area.
Earlier, Israeli military officials said they had arrested one of the Hezbollah guerrillas who took part in the abduction of two Israeli soldiers last month.
Israeli forces also continued air strikes in southern Lebanon, where Lebanese officials said at least 15 people died.
United Nations officials said three Chinese peacekeepers were slightly injured by the fighting in southern Lebanon. Last month, four U.N. observers were killed in an Israeli air strike in southern Lebanon.
Israeli planes also attacked Lebanese positions of the Popular Front for the Liberation of Palestine, a pro-Syrian Palestinian militant group. The group said one person was killed.