Some who left the country in successive waves of emigration have felt drawn back to aid recovery efforts after the bloody and destructive war between Israel and Hezbollah.

Visitors at the Lebanese Diaspora Village, a culture hub in Batroun, Lebanon, that aims to help overseas citizens stay connected with their country.

“Lebanon was going into an apocalyptic phase,” Mr. Al Kadiri, 40, said on a recent morning in the outskirts of Beirut. “Going back was the only best option.”

Lebanon’s large and influential diaspora — estimated at nearly three times the size of the country’s population of 5.7 million — has been trickling back, hoping to offer physical and financial support for a country devastated by one of the bloodiest wars in decades in the Mediterranean nation.