There has been no mention of Abdullah Yahya Al Hakim in any of the Houthis' statements since the recent spate of attacks on ships in the Red Sea, to which the UK and US have responded with air strikes since the end of December. Yet, Al Hakim, officially head of the movement's Intelligence and Reconnaissance Authority, is very much at the front of the action.

Also known under his nom de guerre Abu Ali, the former primary school teacher from Dahyan in Saada Governorate, the Houthis' rear base, is one