Personally, I am not thoroughly convinced.
It's is not easy to convince an agnostic. :)
But when even those few German TV-stations I do consider slightly reliable are getting interested in the issue*, Mr Engdahl who makes himself ring a bit hollow by sensation mongering titles as
BUY FEED CORN: THEY'RE ABOUT TO STOP MAKING IT ...might be at least not completely wrong.
Judge for yourself.
* There will (hopefully) soon a post covering this