By using the inherited clout and expertise of the Greater Israel Lobby to get Congress to torpedo it, after the fact:
The plan, obtained by Foreign Policy, calls on Congress to oppose the lifting of financial sanctions on Iran until it proves that its entire financial sector, including the Central Bank of Iran, has sworn off support for terrorism, money-laundering, and proliferation. Some of those topics haven’t been part of the ongoing U.S.-led talks with Tehran, which means that linking sanctions relief to those conditions after a deal is made would likely drive the Iranians off the wall, say experts. Tehran would likely see any such measures as moving the goalposts and as evidence that the United States wasn’t genuinely interested in backing up its end of the deal.
And that removes the last barrier to the neocons’ next war in the Middle East (if they haven’t managed to launch another one in Iraq before them).
The Dish 