Over the past six years, Saudi Arabia and its allies have – not always accurately – dropped western-built munitions worth billions of pounds on both military and civilian targets in Yemen. On Monday, the Houthis, the Zaidi militia they are fighting, hit back.

The Houthis claimed to have struck a number of targets in the UAE – including a petroleum storage facility and Abu Dhabi airport – with a mix of drones and missiles, all probably Iranian-built and therefore cheap as chips.