By Patrick Hill & Ben Turner British military chiefs were last night braced for revenge attacks by Houthi fanatics. The Iran-backed militia group has vowed to respond to air strikes on Yemen. Four RAF Typhoons based in Cyprus took part in the first blitz by US and UK forces on Thursday night and are reportedly ready to join another. Destroyer HMS Diamond is on “high alert” in the Red Sea and poised for any reaction. MP Alicia Kearns, chair of the Commons Foreign Affairs Committee, told us: “We must prepare ourselves for any attempts at reprisals on UK personnel and allies, most likely by Ira…