"If you're happy at a Hamas victory, you deserve the bullet of an American soldier."While this is not a direct quote, a skim around some Objectivist sites produced the following, equally indirect response from Brook, via Lindsay Perigo at Solopassion (in comments).
"If you wear a tee shirt with a silhouette of bin Laden on it, an American has the moral right to kill you."
"Yaron Brook has replied to my query with a lengthy account of what he remembers having said and the all-important context in which he said it. But he's very explicit that it's for my eyes only—he asks that I not quote him in this context since to do so would grant the premise that the Barbaras of this world are open to rational argument and proceed in good faith. I certainly would like to quote him, and don't agree that to do so would grant such a premise, but I must honour his request. I will say, though, that it's clear from his comments that he doesn't support the gratuitous killing of anyone, even in war."Strangely, these 'lengthy' comments are too doubleplus-secret for anyone else to see, and the supposed 'context' too 'all-important' to give a straight yes-or-no answer to. There are questions of 'granting premises of rational argument' and 'good faith', and the 'honour' involved in being the privileged vessel for such 'eyes-only' comments.
In other words, we can take that as a 'yes.'