That is a new pocket-sized book by the excellent Daniel Drezner and it is indeed about zombies:
It is indeed to neoconservatism's credit that its doctrine is consistent with extant work on how best to respond to the zombie menace. A war against zombies would, surely, be a war against evil itself.
Here is Dan's preview of the book. A few days ago a loyal MR reader wrote to me and asked, if I were surrounded by a hoard of zombies, and could have only one weapon to fend them off, what would it be? The answer is obvious: the rule of law. Alternatively, a constitutional amendment against zombies.