The cease-fire appeared to largely be holding, but it was unclear when hundreds of thousands of Lebanese and tens of thousands of Israelis could return to their homes near the border.

It was a rare moment of respite for Lebanon, as bombs stopped falling after a year of war. Thousands of displaced people joyfully drove back to their towns and villages in southern and eastern Lebanon.

Iranian Foreign Minister Abbas Araqchi said on Wednesday that Tehran reserves the right to react to Israeli airstrikes last month on Iran but is also taking account of other developments in the region.