I was surprised that he knew who Netanyahu was
“Some of us have strong opinions and are often misunderstood. My analogy was extreme – but it was to make a point. I was simply trying to explain how stupid it seemed to me - how ludicrous that pairing was. They’re polar opposites and it made no sense.- Williams
Anybody with a shred on Intellectual honesty would admit he wasn't really comparing Obama to Hitler. He was referring to the meeting between the president and the SOTH as being a farce.
I don't see why the the statement had to be "clarified". It's easy to see Obama as "the enemy" without any reference to Hitler.