On The Posner Show, Sarah and Sarah discuss the ad placed in the New York Times by the Emergency Committee for Israel  claiming that prominent liberal think tanks are "anti-Israel." There has been an effort on the right to discredit these liberal organizations and by extension Obama and the Democratic Party. But what else does the conflict say about the state of discussion among American Jews about Israel—and the controversial term "Israel firster"? Is rational debate about these issues on Twitter impossible? Plus: Wildman's recent piece about the web magazine 972, and whether it is changing the face of the Israeli left.