WASHINGTON (AP) — A barrage of U.S.-led airstrikes in and around the Syrian city of Kobani, including 39 over the past two days, has killed hundreds of Islamic State fighters and has stiffened the city’s Kurdish defenders, the Pentagon’s spokesman said Wednesday.

Offering an unusually detailed description of the fighting, Rear Adm. John Kirby told reporters that all but “hundreds” of civilians have evacuated the city and that increasing numbers of Islamic State group fighters are flowing in.