By Michael Holden and Guy Faulconbridge LONDON (Reuters) – Britain struck Syria with air-launched cruise missiles on Saturday to cripple President Bashar al-Assad’s chemical weapons facilities and prevent what Prime Minister Theresa May cast as a global slide towards their greater use. Four Royal Air Force Tornado jets from the Akrotiri base in Cyprus fired Storm Shadow missiles at a military facility near Homs where it was assessed that Syria had stockpiled chemicals, Britain’s Ministry of Defense said.