President Obama will present the Iran vote as the most important foreign policy decision since the Iraq war. Photo: Wikimedia Commons.

President Barack Obama will present the Iran nuclear debate as the most momentous U.S. foreign policy decision since the Iraq war Wednesday, in a fresh bid for support.

With the deal due to be voted on by a Republican-dominated Congress, Obama will give an address at American University in Washington hoping to give historical weight to a polarizing and sometimes bitterly hyperbolic debate.

Read full story at AFP.