Israel Extends Evacuation Warnings in Lebanon, Signaling a Wider Offensive

BEIRUT — The Israeli military on Thursday warned people to evacuate a city and other communities in southern Lebanon that are north of a U.N.-declared buffer zone, signaling that it may widen a ground operation launched earlier this week against the Hezbollah militant group.

Israel has told people to leave Nabatieh, a provincial capital, and other communities north of the Litani River, which formed the northern edge of the border zone established by the U.N. Security Council after the...