he reverts to his buffoonery, throwing truth and rational argument, let alone reason, out the window.

First, he relies on the mendacious testimony of his apparently like mninded "human rights organizations" pals. Truth of the matter is that not only are "summary executions" by Israeli troops rare, to date there's only one proven case -- that of the 13 year old girl in the Gaza strip.
But note also how the mendacious idiot projects the Israeli law system onto the military echelon as he has no other way to defame Israel on this issue.

Next, the arch-clown proves himself worthy of his certificate as an avowed liar by accusing Israeli troops of direct collusion in the Sabra & Shatila massacre he digs up from the past.

I for one hope a legal showdon will take place and Steven Argue will end up losing his residence and the rest of his property to cover the legal expenses he might be slapped with, just like what occurred to the neo-Nazi "historian", David Irving. Argue certainly is no neo-Nazi, but he sure shares their flair of irrational and compulsive defamation of Zionism and Israel. If he ends up paying a steep price for his hateful obsession, poetic justice will have been served.