The new administration can renegotiate the Iran nuclear deal from a position of strength.

By; Michael Makovsky
The Wall Street Journal, Jan. 3, 2017 As the bipartisan opponents of President Obama’s Iran nuclear agreement prepare to address its many shortcomings, they should beware of unwittingly repeating some of his mistakes.
Instead of relying on more sanctions to dismantle or renegotiate the deal, the most urgent need is restoring U.S. credibility and resolve in opposing Iranian aggression and reshaping the Middle East.
Two fundamental misjudgments led to the disastrous nuclear agreement. First, Mr. Obama eschewed credible military threats and relied on congressionally generated economic sanctions to pressure Iran to negotiate. Second, he focused only on Iran’s nuclear program, ignoring its malignant regional misconduct. Free of pressure and scrutiny, Tehran shaped the agreement’s terms and expanded its aggression and influence.
The current policy debate has ignored these mistakes. Instead, it is focused on using sanctions to enforce and improve the Joint Comprehensive Plan of Action with Iran. This narrow approach is counterproductive. The agreement front-loaded Iran’s economic benefits. But it only mothballed elements of its nuclear program; it did not eradicate it.
The U.S. will need years to rebuild a robust international sanctions regime