Warplanes from Libya’s internationally recognized government on Monday attacked an airport in Tripoli, the capital controlled by a rival administration, officials said.

Extending a series of tit-for-tat strikes, the attack coincided with the swearing-in of Khalifa Haftar, one of the most divisive figures in post-revolutionary Libya, as army commander for the recognized government.

In a speech, Haftar vowed to continue a “fight against terrorism,” according to a video from the ceremony posted on social media. “We remind the world that our army is fighting terrorism on its behalf.” […]