I read that there are strong suggestions of a Soviet infiltrant high in the Nazi leadership, with most suggesting it was Bohrmann.

Now I've been reading the Wikipedia article on Ribbentrop and he seems really out of place.

He is reported to have been not very nazist at all in the early years, only later becoming antisemitic etc. He worked hard to undermine Germany's Foreign Ministry. He made a complete fool of himself in the UK, severely hurting relations, while doing well in the USSR - later he even wanted a German-Soviet alliance against the British Empire!

He damaged the German war effort in many ways, such as his complete ruining of relations with Turkey, his incessant bullying of neighbouring countries, lying to Italy to get them to join a war they couldn't fight, etc.

He also seems really desperate to stay in Hitler's good books, while basically everyone at home and abroad hated him. Hitler suggeste that Ribbentrop was even more radical than him.

Now this all seems like exactly what the Soviets would have wanted. On the other hand it might as well just be the work of a blithering idiot in power merely because he knew how to keep Hitler happy.

Is there any strong evidence that could support the former?