The Navy’s surface fleet has spent the past 15 months taking down hundreds of missiles and drones fired by Yemen’s Iran-backed Houthi rebels at U.S. and allied Navies’ ships, as well as commercial vessels in and around the Red Sea.

The world’s top three container operators said they fear instability in Gaza and broader regional tensions mean continued danger.

British and American ships are tentatively returning to the Red Sea after Yemen’s Houthi rebels vowed to hold off attacks on vessels linked to both nations, a sign that traffic on one of the world’s main trade routes could normalize after more than a year of disruption.

Shipping companies expressed caution about using the shorter route between Asia and Europe that many ships have avoided for more than a year.

Mandeb strait decreased by 50% after the Yemeni rebels launched maritime attacks, according to the US Energy Information Administration.

Yemen’s Iran-backed Houthi movement has released the crew of a cargo ship more than a year after its fighters hijacked the vessel in the Red Sea, as part of its campaign of attacks in support of Hamas in its war against Israel.

CMA CGM, the French container line that has continued to transit the Red Sea despite attacks on shipping, said it will continue to route most of its affected services away from the region.

French shipping and logistics group CMA CGM will continue to avoid the Red Sea even though it considers the region is more stable following the ceasefire agreement between Israel and Hamas, it said on Saturday.

European forces joined the US Navy last year in an effort to defend key shipping lanes from Houthi rebel attacks.

An American destroyer, USS Spruance, shot down six missiles and seven drones during a recent Red Sea combat deployment.

British and American ships are tentatively returning to the Red Sea after Yemen’s Houthi rebels vowed to hold off attacks on vessels linked to both nations.