From The Times, on Iran's apparently accelerating nuclear program:

Filtering out the hyperbole surrounding recent proclamations about Iran's tangible progress is always difficult, especially at a time when the country is determined to show that neither the Stuxnet computer worm, which crippled part of its nuclear infrastructure last year, nor Western sanctions have proved to be more than modest setbacks. Dr. Abbasi himself is rarely seen or heard outside of Iran.

But international nuclear inspectors and American officials say that all the evidence points to the imminent installation of centrifuges at an underground nuclear plant on a military base near the city of Qum. Iran revealed the existence of the plant in 2009, after learning that the United States and European powers were about to announce that they had discovered the complex, deep inside the Iranian base.

What concerns inspectors and European and American officials is Iran's announced effort to increase production of uranium enriched to nearly 20 percent purity. Iran insists that it needs that fuel for a medical research reactor. But last week William Hague, the British foreign minister, dismissed that assertion as a cover story.