When Britain last faced an existential threat ,on D Day it completely flattened any French town or village in Normandy that housed German units . Without warning . That's we're the nazis were, in those towns . Syrian forces are in a much more precarious state than Britain was in 1944 , with the US at its side and the nazis virtually a spent force .
If Britain was overrun by an enemy force in the same way Syria has been, and with the real danger of genocide should they fall, itd be doing exactly the same thing except with bigger bombs . Its forces wouldn't hesitate for a second . And anyone suggesting otherwise is either a liar or a complete wanker. No matter how left of the spectrum they might be .