Update: this action, now closed, ran in November 2013.
Just as a diplomatic solution to the Iran crisis appears potentially within reach, and at a time when the Obama Administration is imploring Congress to give it the space it needs to test this possibility, pressure is mounting for Congress to push ahead with new sanctions against Iran. Some are arguing that putting a gun to Iran's head during negotiations while tying the hands of Obama Administration negotiators is a way of promoting successful negotiations.