Slick Iranian move puts U.S. in precarious place

Iran made a sophisticated move in its nuclear program between mid-December and mid-August. It converted almost half its stock of its most dangerous 20 percent enriched uranium into a “peaceful” form that cannot be used for a nuclear weapon.

At the same time, however, it sharply increased its manufacturing capability to produce more rapidly the same 20 percent enriched uranium or to go even higher to 90 percent weapons-grade uranium should Tehran decide to take that step.