DEIR AL-BALAH, Gaza Strip — (AP) — An Israeli strike on a mosque in the Gaza Strip early Sunday killed at least 19 people, Palestinian officials said, as Israel intensified its bombardment of northern Gaza and southern Beirut in a widening war with Iran-allied militant groups across the region.

Palestinian medical officials say an apparent Israeli airstrike early Sunday killed at least 18 people in central Gaza

Israel is racking up military wins against its regional foes. But fighting multiple wars will take its toll, and experts wonder what the long-term strategy is.

"It's something we've been facing for the last year, something we're very aware of moving forward," an IDF official told Newsweek.

Hamas launched a surprise attack into Israel almost exactly a year ago, killing 1,200 Israelis, taking 250 people hostage, and setting off a war with Israel that has shattered much of the Hamas-controlled Gaza Strip.

Tehran backs efforts for a ceasefire in Lebanon on the condition it would be backed by Hezbollah and simultaneous with a ceasefire in the Gaza Strip, Iran's foreign minister Abbas Araqchi said in Beirut on Friday.

Israel shifted some of its focus from Hamas to Hezbollah, which holds much of the power in parts of southern Lebanon and some other areas of the country.