Two Liberian-flagged ship attacks and a round of Israeli airstrikes early Monday targeting Houthi rebels raised fears of a renewed Houthi campaign against shipping.

Renewed clashes between Israel and Yemen’s Houthis, and Houthi attacks in the Red Sea, come amid talks over a potential ceasefire in Gaza.

The attack on the Magic Seas, a dry bulk carrier owned by Greece’s Stem Shipping, was the first on a commercial vessel since December by the group, which is backed by Iran. It was followed almost immediately by Israeli strikes on a number of Houthi-held ports in Yemen.