I reserve my judgement until he can speak for himself why he is attending with these individuals.
Rabbi Kahane always sat and talked with Dr. Mehdi, who was a much more dangerous arab than Yasser Arafat.
Rabbi Kahane would never eat with the enemy, it's like going to an SS dinner with a thousand Nazi's & shaking their hands.
I mean really, what are you talking about, how does one explain this to anyone?
Also I don't think it's Kosher to be around people eating non Kosher food (if he wasn't eating).