I'd see which newspaper had a reaction to the Khashoggi's death and try to directly contact the journalists writing the articles. They're people and they may be quite happy for the ammunition provided. For example:
Don't let scumbags have their way, if you can tip the scale in the other direction. But again, don't want to take the moral high ground and tell people what to do.
None. And it's not like wikileaks made a lasting and positive change anywhere so far. Plus, after "leaking" it's quite possible your life will be destroyed. Thus the utility becomes a net negative.
https://techcrunch.com/2018/10/17/silicon-valley-hoped-the-k...
Don't let scumbags have their way, if you can tip the scale in the other direction. But again, don't want to take the moral high ground and tell people what to do.