Broadly speaking, the United States will have three options with respect to Iran in the years ahead. The first is to try to contain the country through intensified U.S.-led sanctions and a coalition of regional states led by Saudi Arabia (and separately, Israel). The second option, which is not mutually exclusive to the first, is to seek regime change. The third is to use a variety of behavior-driven inducements to preserve the regional balance of power through détente. The third option is politically unpopular in the United States, would take much longer than the others to show its effects, and would be considerably more difficult to execute. It also offers the best combination of risks and rewards for the United States.