I suspect that Kerry and many vets have or have had some PTSD issues, but for me, he's more of a Clinton-esque sociopath, being all things to all people if it gets him elected. I think he's a Kennedy wannabe.
Years ago when he married Theresa a lot of this came out at the time, including his presidential ambitions, because here in western PA the untimely death of Heinz and the surprising wedding not long after of Theresa and Kerry was well documented locally and viewed with suspicion by some who thought Kerry saw dollar signs and took advantage of a grieving widow. The Kohn/Kerry name change came up with the suggestion that the grandparents wanted to Kennedy-ize themselves to get in on that action. The apple doesn't fall far from the tree for John F. Kerry. It seems he likes to be thought of as a Kennedy type candidate and beams at the comparisons to JFK. I think, despite his war service, that he is a commie at heart and I shudder to think he is the current dem frontrunner. Look what he's done for Mass. I think that's what Feder is trying to say.
Maybe a little of both?