Didn’t we see this show in 1962?
Yes, but there’s much more happening now than back then. Several kinds of threats are worse, including the nuclear threat. The study is so complicated, that it’s time consuming to organize for putting into comprehensive graphics for viewer simplification. The numbers of aggressions are also surprising, even to someone who has already seen quite a few.
There’s a little bit of good background information here.
http://www.freerepublic.com/focus/news/3715497/posts?page=50#50