Many, many stupid things have been said about Mearsheimer & Walt's piece on "The Israel Lobby", not all of them by Glenn Reynolds. Even though Dan Drezner avoided calling them anti-Semites, I didn't think his post warranted all the praise it got.
But Jacob Levy doesn't say stupid things. Read Multiculturalism of Fear if you want to understand Trudeau better than Trudeau did. Or read Loyalties of Federalism and Liberal Thought if you want to know how we ought to be responding to the separatist movement.
So Levy's post on M&W is, unsurprisingly, worth reading.