A U.S. or Israeli war with Iran would not only lead to a humanitarian tragedy but would put the entire Middle East on the precipice of conflagration — possibly dragging other great powers such as China and Russia into the picture. With so many reasons to reconsider the military option and rethink the sanctions track, there is a growing feeling that this crisis can only be solved by a diplomatic grand bargain between America and Iran – something that the public in Iran and the United States are increasingly endorsing.