Iran has resumed nuclear activities it had agreed to suspend as a part of the Joint Comprehensive Plan of Action (JCPOA), the agreement it entered into in 2015 with the United States and Germany, France, the United Kingdom, China and Russia, and it left room for further action. On July 7, Iran announced that it would no longer cap uranium enrichment levels at 3.67 percent. The next day, its atomic energy agency announced that it was enriching uranium to 4.5 percent. Iran also announced that in another 60 days it would implement a third phase of reducing its commitments to the nuclear deal in response to increased U.S. sanctions pressure....