So you're now saying that if we do our bit to disarm the Saudis this will, of course, lead to the Iranians being far more peaceful and restrain their ambitions in the peninsular? I think perhaps you are Jeremy Corbyn.
Yes, we trade with Saudis; we also trade with plenty of other unsavoury regimes.
To my knowledge though, Saudi Arabia is not pursuing a policy of territorial expansion and is partly using its economic dominance to ensure others can't criticise or take retaliatory economic or diplomatic action.
For all its sins, I don't think the Saudis (or Qatar or similar) are a threat to other nearby territories as China is to Taiwan, India , Japan and the South China seas.
Got to hand it to the Chinese though, they can see the EU is especially vulnerable. It's main currency is - thanks to QE and Target 2 with the Bundesbank badly exposed - liable to go tits up soon. By helping to bail out the EU and therefore artificially prop-up a currency that is otherwise a patient waiting to die, they can guarantee the EU will do f-all when the CCP get really nasty with India, Taiwan etc.
In the long-term (it's already happening now), China - with its larger reserves of precious rare earth metals, essential to so many things we now depend on - is insisting that products that use these substances locate production in China and quite rightly so. Why, they ask, should they dig up and pollute their country so that the precious metals can be shipped to Japan or South Korea for workers there to benefit? Like I said, can't knock the Chinese for this. Japanese and South Korean companies can get the metals but only if production is eventually moved to China.
The Germans will, over the years, become more of a kind of flat-pack assembly manufacturer with low-skilled jobs in the main, still retaining perhaps a few of the higher-end R&D jobs. Production will move more and more to China.
The EU's rush to suckle on the teat of China for short-term economic benefit will have long-term consequences; not necessarily beneficial to the peoples of the EU.
As a postscript I'll ask you this - would you be so supportive of your beloved commission on this matter if the Uighurs were black? My guess is there would be huge international condemnation and no EU/China deal. The likes of you, David Lammy, Diane Abbot and Labour would be shrieking, as would all the Islingtonites. But other Asiatics? Who cares eh, and whatabout Saudi Arabia!