In a forceful speech, President Obama laid out in a few words the best argument for the deal with Iran: there is "no plausible alternative."
If Congress kills the Iran deal, it will leave Obama unable to fulfill his duties as head of state. Yet legislators won't be the ones remembered for the failure.
"I am more hopeful about the Iranian future than the Israeli one. The Iranians are at least willing to admit there is a problem."
In 2009, U.S. talks with Iran broke down because the U.S. was seeking quick results. It's time to try again.