A few weeks ago Dr. Barnett Rubin, one of the world's premier Afghanistan experts at NYU, created a stir with a series of blog posts about signs the Bush administration might be gearing up for a military campaign against Iran. Last week I interviewed Rubin about the Bush administration's war talk against Iran and I asked him, Is there really any evidence that Iran is helping arm the Taliban, as the Bush administration keeps claiming?

In tomorrow's episode, Dr. Rubin discusses the United States' strategic alliance with Gen. Musharraf in Pakistan and whether Iraq is really the central front in the battle against al Qaeda and international terrorism.