
Last week, Iran announced that it had started enriching uranium to 20 percent at its underground Fordow facility. This step is a serious escalation in a long-running crisis—but, even more ominously, it is also a threat. Iran is apparently signaling that if the 2015 nuclear deal—formally known as the Joint Comprehensive Plan of Action —is not salvaged in the weeks after U.S. President-elect Joe Biden takes office, it will further ramp up its nuclear program to strengthen its hand ahead of any future negotiations. Under these circumstances, any new agreement would likely be worse than resuscitating the current deal.
In spite of the Trump administration’s best efforts, the Iran deal has not collapsed completely. In 2018, the administration ceased providing Iran with promised sanctions relief. In response, Iran gradually ramped up its nuclear program, breaching the deal’s limits on uranium enrichment. Nonetheless, Iran hoped that President Donald Trump would lose the 2020 U.S. presidential election and a new Democratic administration would want to reenter the deal. Accordingly, Tehran did not withdraw or restart its plutonium program. It has continued to accept exceptionally intrusive monitoring of its ongoing nuclear activities. And it could reverse its ongoing noncompliance quickly and easily. If Biden can provide Iran with the sanctions relief it was promised, he can likely reassemble the deal (to which all the other signatories are still committed).