Scott Walker says he’d toss the Iranian nuclear deal negotiated by the United States and its allies into the trash if he’s elected president of the United States next year.

To which the current president, Barack Obama, says the Republican Wisconsin governor needs to “bone up on foreign policy” to realize the foolishness of such a pledge.

Score one for the 44th president.

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The sole intent of the deal is to deny Iran the chance to develop a nuclear weapon. It was a painstaking negotiation. It reduces the number of centrifuges Iran can use. It allows for careful international monitoring of Iran by inspectors to ensure the Iranians are complying the with the deal. It won’t lift economic sanctions on Iran until it does comply.

So, what are the spectators in the peanut gallery — such as Gov. Walker — proposing? Do we bomb the Iranians? Do we invade? Do we just impose more sanctions and then hope they will prevent the Iranians from doing what they damn well please with respect to nuclear weapon development?

The president spoke to National Public Radio about the deal. “I am confident that any president who gets elected,” Obama told NPR host Steve Inskeep, “will be knowledgeable enough about foreign policy and knowledgeable enough about the traditions and precedents of presidential power that they won’t start calling [into] question the capacity of the executive branch of the United States to enter into agreements with other countries. If that starts being questioned, that’s going to be a problem for our friends and that’s going to embolden our enemies.”

All this tough talk and bluster from those who oppose the deal go the heart of a concern some of us out here have raised about whether the United States should be speaking with a single, clear, strong voice regarding Iran.

Yes, Congress should be heard. However, let us not undermine the executive branch’s authority to negotiate in good faith — even with our enemies.