Foreign Policy:

President Barack Obama’s top negotiator to the Iran nuclear talks pushed back against her critics on Capitol Hill, arguing that the world would rally behind an agreement if the two sides manage to hammer out a deal this year.

“If we were able to do it, the world would judge it as a good thing — that it is the way that will ensure that Iran cannot acquire a nuclear weapon and no other pathway will get us there,” Wendy Sherman, the undersecretary of state for political affairs, told an audience at the Carnegie Endowment for International Peace on Friday.

Sherman was responding to a new report that Republicans in Congress have acknowledged they cannot prevent the president from implementing a deal during his time in office. But instead of giving up, they will telegraph to Iran’s supreme leader their intentions to blow up a deal after Obama leaves office in 2016 — a plan designed to make Iran walk away from the table.

“The supreme leader has said publicly that he is concerned that if he enters into an agreement that the very next president is going to change that agreement,” Republican Bob Corker, the chairman of the Senate Foreign Relations Committee, told Bloomberg journalists.

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