While his comments are pretty damning, that clip does cut off the part where he backtracks and says he does condemn Hezbollah for the violence.
Here is a longer clip of the conversation.
I'm not quite sure how you don't take sides for or against a terrorist organization, yet condemn them for violence. He supported Hezbollah before he opposed them apparently.
I heard somebody today, most likely Rush Limbaugh, play the whole clip, in response to a Dingell complaint about
not playing the whole clip.