With thousands of advanced centrifuges on standby, Tehran says it is now spinning more, which could increase its stockpile of near-bomb-grade atomic fuel. With thousands of advanced centrifuges on standby, Tehran says it is now spinning more, which could increase its stockpile of near-bomb-grade atomic fuel. Iran, Nuclear Weapons, Uranium, International Relations, International Atomic Energy Agency, your-feed-science NYT > Science