By Fareed Zakaria
After Iran and the major powers signed onto a deal on Tehran's nuclear program, expectations were high. Over the last week, they have fallen sharply as Iranian officials have made tough public comments, Israel's Prime Minister has reaffirmed his opposition to almost any conceivable deal, and several influential U.S. senators have threatened new sanctions.
Now, this does not mean a final deal with Tehran is impossible but it does mean that both sides, Tehran and the West, need to start thinking creatively about how to bridge what is clearly a wide divide and they also have to think about how to get around the main obstacle they will face – which will be opposition at home, in Iran and the United States.
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