Intelligence reports accuse Iran of buying large amounts of a metal that has many civilian uses but which some U.S. and other countries' officials believe Tehran wanted exclusively for an atomic bomb, diplomats say. Washington says oil-rich Iran is developing atomic weapons under cover of a nuclear energy program. Tehran denies this, insisting its atomic ambitions are limited to the peaceful generation of electricity. One non-U.S. diplomat, citing intelligence gathered by his country, said Iran bought "huge amounts of beryllium from a number of countries" but gave no details on the amount or states involved. Beryllium has a long list...