He slurred his words and was acting very strangely.
Either he was really amped up with hate for the Palestinians (which prompted him to give the speech) or he was on drugs or his health is not so good.
One of the three scenarios must have been present which is very obvious when you watch his speech.
He looked like a robot - controlled by the Jew Lobby AIPAC.
AIPAC controls our congress and now our president.