This follows a familiar pattern. Do you remember the UK support for that "freedom fighter" Bin Laden and he fellow Mujahidin gang in Afghanistan? That resulted in the overthrow of the decent society that existed there at the time, and ended really well generally for the western world!
It was long before I took an interest in this type of thing. I do remember USA being criticised for having built up Sadam as a bulwark against Iran, before attacking Iraq in the first gulf war.