Dozens of people have been killed by Israeli strikes in Lebanon, including 20 who died after a strike flattened a multi-story residential building in central Beirut overnight, according to Lebanese officials.

The strikes, which destroyed an eight-story building and left a crater in the ground, were the fourth in Beirut in less than a week.

BEIRUT — A massive Israeli airstrike that hit a residential building in a central district of Beirut early Saturday killed at least 20 people, thundered across the city and underlined fears in Lebanon that the war is escalating, days after diplomatic ...