There are articles ( many ) about what I posted on this site. Does that help any ?
Someone can. I’m not as savvy on such sources as others might be.
Anyone who wants to do it on Donald can do so too... but again we need to evaluate such data against who the person is claiming to BE. A negotiator who has been all over the map is not necessarily bad. A negotiator who has not honored what he has negotiated (barring force majeure) is a different matter.