Obama wrapped up his announcement by comparing the deal to deals Presidents Ronald Reagan and Richard Nixon had made with the Soviet Union during their presidencies.

“If Congress kills this deal, not based on expert analysis and without offering any reasonable alternative, then it’s the United States that will be blamed for the failure of diplomacy. International unity will collapse and the path to conflict will widen,” Obama added. “The American people understand this, which is why a solid majority support a diplomatic resolution to the Iranian nuclear issue. The words of President Kennedy said let us never negotiate out of fear, but let us never fear to negotiate. The American people remember that at the height of the Cold War, presidents like Nixon and Reagan struck historic arms control measures with the Soviet Union, a far more dangerous adversary, despite the fact that that adversary not only threatened to destroy our way of life, but had the means to do so. Our agreements were not perfect. They did not end all threats, but they made our world safer. A good deal with Iran will do the same.”

Obama 2004: Iran More Dangerous Threat Than The Soviet Union…

… Equally unclear is how Obama assesses the nature of Iran’s threat to America.

In 2004 he said that Iran was more dangerous than the Soviet Union had been because the radicals in Tehran could not be deterred by traditional strategic means. In late May, he changed his mind, saying that Iran doesn’t “pose a serious threat to us the way the Soviet Union posed a threat to us.” Faced with criticism, Obama then pivoted again, declaring Iran to be a “grave threat” to America.

Mind you, this list of reversals excludes Obama’s abandonment of his public financing pledge. It also excludes the more troubling missteps Obama committed last month.