You are one slow SN. I thought that the high IQ claim would have some bearing when discussing topics with you folks. But then again you guys are known for not 'getting' enterprise level deals ALA the known breaching of the Russian TOC - So let me do this in baby steps for you.
when one does govt to govt deals there are explicit terms and conditions that are requested . e.g. don't reverse engineer our engines! . similarly, when you do a deal with Sudan - the TOC would include ( one would imagine if you want to follow UN rules- don't use it to bomb villages ( why?) because we know you use aircrafts for those purposes as documented previously.
Then there are others terms- like don't paint the aircraft white with UN flags to try to deceive that the UN is bombing villages ( as they have done previously) or don't try to use these for any, let's say ' genocide purpose'.
Maybe perhaps do like the Americans do in their 'sensitive countries ' deals, like the F16 deal w/ pakistan- where they have stronger stipulations, aircarfts altered with maybe a kill switch in the software and have their own folks at the airfield, to ensure the aircrafts are not being used outside the TOC. Certainly sudan would fall under " sensitive " deal given strict UN guidelines.
then if you find they are doing so- you cease relationships.
In spite of all these infractions the Chinese continued to give them aircrafts and arms that they knew was being used against the defenseless tribals.
Instead what we saw with these breaches, in the case of Sudan ( apart from red carpets ), was - " During a meeting in Beijing, the Defense Minister of China reportedly told Sudan's joint chief of staff that military relations had been "developing smoothly" and said: "[We] are willing to further develop military co-operation between our two countries in all areas
So you see SN- this is not as simple as a gun shop selling a gun to a person- these are govt to govt deals, contractual terms that way more intense, binding and has higher level of repercussions over a retail sale.
Now I may come back and edit my post to add more to it like the quote I added from the Chinese or simply correct some typos- but you be sure to be continually perturbed grasshopper. Because the bigger picture for you SN's are not the message but how you can distract from it.