At the risk of jinxing this golden moment when droid has agreed with something I've said, I think it's worth pointing out that there are some among the hard left of Labour - not that Corbyn is by any means the most extreme of these, although he does lean in that direction - who'd be perfectly willing for the UK to carry on supporting or participating in brutal imperialist wars in the Middle East, but with a different set of allies and client states: Russia, Iran and Syria in place of the USA, KSA and Israel. This is what I've said before: neither side has an "ethical foreign policy" for as long as many self-described progressives either ignore, or act as apologists for, brutal regimes just because they're not aligned with the USA. (Think also of the StWC's disgraceful "Hands Off Syria" demo after a few missiles were flung at some evacuated nerve gas factories, when the real message was very clearly "Hands Off Assad".)
Genuine universal pacifism is one thing, but bland and meaningless condemnations of "violence on all sides" - when one side has quite clearly instigated the violence and committed the vast majority of it - are an obfuscation designed to give a false impression of equivalence between sides in a drastically unequal conflict.
(And the UK, although it does export a lot of weapons, is nowhere near the 'top' spot globally - a quick survey of websites that list these things suggests it's somewhere between #6 and #8.)