A mysterious airstrip is being built on a remote island in Yemen, which could provide a key landing zone for military operations patrolling the Gulf of Aden. Commercial shipping through the Gulf and Red Sea has halved under attacks by Yemen's Houthi militias, and the area has also seen weapons smuggling from Iran to the militias. Experts worry that a ceasefire in the Israel-Hamas conflict may not be enough to halt the Houthis' campaign, which has drawn global attention. The completion of the airstrip could potentially escalate the war in Yemen.