Fatal flaw?
Check it out:

A devastating piece in the New York Times, penned by the head of the Nuclear Proliferation Prevention Project at the University of Texas. We’ve written at great length about the many reasons to reject the Obama administration’s expected deal with the Iranian regime. One expert termed the West’s likely inability to re-impose sanctions on Iran if and when they (continue to) cheat the would-be accord’s “fatal flaw.” Today, Prof. Alan Kuperman offers another entry in that category, scrutinizing an element of the deal that many have simply taken for granted.