Not selling weapons to and rescinding the uk's relationship with the Saudi regime would be a grand start.
I'm not sure if I follow.
You think ending relations with a relatively stable and powerful regime in a region that is totally fucked because it lacks powerful stable regimes will help how?
for starters, it's kinda hard to be morally objective in a war against a brutal enemy that beheads people when you're allied with a country that brutally beheads people.
Not selling weapons to and rescinding the uk's relationship with the Saudi regime would be a grand start.
http://www.independent.co.uk/news/uk/politics/uk-could-be-prosecuted-for-war-crimes-over-missiles-sold-to-saudi-arabia-that-were-used-to-kill-a6752166.html