No one said diplomacy with Iran would be easy. And now, before it even started, the Iranian election crisis has left Tehran politically paralyzed and Washington without a clear diplomatic path ahead. Iranian centrifuges keep spinning, leading some to think that September should be the deadline for Iran to accept the U.S. offer of talks. Although diplomacy must remain the policy, the momentous upheaval in Iran has completely changed the political landscape. Opening talks with Iran’s current government at this decisive moment could backfire severely. Indeed, now is the time for a tactical pause with Iran.