PARIS (AP) — France persuaded President Donald Trump to stay in Syria and launch airstrikes as punishment for an alleged chemical-weapons attack, French President Emmanuel Macron said Sunday.

Appearing live on French television BFM and online investigative site Mediapart nearly a year into his term, the 40-year-old leader said the U.S., Britain and France had "full international legitimacy to intervene" with the strikes, to enforce international humanitarian law.

The allies fired missiles early Saturday at three chemical-weapons facilities in Syria to punish the regime for the alleged use of c...