Houthi centre tells airlines Saudi airspace is a theatre of operations, Mecca and Medina excepted

The Humanitarian Operations Coordination Centre linked to Yemen's Houthi movement told airlines on Monday that Saudi airspace was unsafe. Al-Masirah, the Houthi-controlled television station, carried the warning. The centre said Saudi airspace would become a theatre of operations for forces affiliated with the group, and that the self-styled Republic of Yemen would bear no responsibility after the notice. It exempted the airspace over Mecca and Medina, and said those two cities would remain safe at all times from its forces.

The German agency dpa reported the text on 5 October. No airline had, in that report, announced a cancellation or a reroute. The notice is a claim of intent and a disclaimer. It is not yet a record of a diverted flight.

The offensive the warning answers

The notice followed the announcement of an operation the Saudi-backed government calls Dawn of Yemen. Presidential Leadership Council chairman Rashad al-Alimi has ordered forces to retake Houthi-held territory. On Monday, Information Minister Moammar al-Eryani told Reuters that government forces had effective control of the Bab el-Mandeb Strait after advances in the Dhubab area, with Saudi air support. Other government sources told Reuters and AFP that forces had reached the outskirts of Mokha, or had taken Dhubab airfield and cut the road from Dhubab to the strait, and had not confirmed the city itself. Houthi media denied advances in Dhubab.

The airline warning is the Houthi answer to that air support. Saudi jets have been hitting targets along the coast. Residents in Riyadh reported explosions on Monday, though Saudi authorities had not confirmed strikes in the capital. A warning that treats the kingdom's airspace as an operations zone is aimed at the aircraft that use it, civilian as well as military.

What the exemption does

Mecca and Medina are the exception written into the notice. The centre said the sacred airspace over those cities would not be attacked. The rest of the kingdom is placed in the warned category. That split matters for carriers. Hajj and Umrah traffic into Jeddah and Medina is a different schedule from the trunk routes into Riyadh and Dammam. A notice that exempts two holy cities and warns the rest forces an operations desk to decide route by route, not by country.

Civil aviation authorities, not a militia television station, decide whether a notice becomes a NOTAM. As of the dpa report, the warning was a Houthi statement. It had not been adopted, in the copy available, by Saudi or international regulators. Pilots still fly on the notices their own states issue. The Houthi text is a threat assessment from one party to the war, published as if it were a safety bulletin.

The strait underneath the air routes

Bab el-Mandeb is the maritime reason Riyadh is spending aircraft on the coast. The Houthis took the strait last month. A government push to take it back is a push to reopen a lane that carries oil and container traffic between the Indian Ocean and the Suez Canal. The airline warning sits on top of that fight. If carriers treat Saudi airspace as closed, the cost lands on passengers and cargo in the Gulf. If they treat the warning as a claim without a regulator behind it, the cost stays political until a missile or a drone makes it operational.

Monday's text draws the line at Mecca and Medina, names the rest of Saudi airspace as a theatre, and assigns no responsibility to the group that issued it. The flights that actually divert, or do not, are the next fact. They were not in the first reports.