Usual Haaretz crap, Rav Dayan is not a rabbi, and he says so openly. THough he is a male line descendent of David HaMelech.
Rav Dayan was not in Kahane Chai, he was in Kach, he was very active and loyal to Rabbi Meir Kahane zt'l, and was one of his aides during the late 70's and early 80's when the Rav had almost no one.
But it is true he organized the use of the Pulsa on Sharon.