This is just a lawsuit -- it hasn't been proven yet -- but I thought it was interesting, and you may not see it elsewhere. This is the first I've heard of Obama vetoing a bill allowing victims to sue foreign governments. Short article. There's a video on the site -- I didn't watch it.
Find it here: http://www.aljazeera.com/news/2017/09/saudi-embassy-funded-911-dry-run-report-170909223532351.html