Components other than centrifuge numbers and efficiency also go into the mix of how quickly a nation can make a nuclear weapon. From year 11 to 13, says the document, Iran will install centrifuges up to five times as efficient as the 5,060 machines it is now restricted to using. These restrictions translate into "serious constraints on ... (Iran's) nuclear program for 15 years," Moniz said. Marking the agreement's anniversary Thursday, President Barack Obama said it has succeeded in rolling back Iran's nuclear program, "avoiding further conflict and making us safer." The bigger nuclear deal provides Iran with sanctions relief in exchange for its nuclear constraints.

Source: International New York Times July 18, 2016 18:22 UTC