Earlier today there was another explosion in Iran, this one in Isfahan, “said to be the primary location of the Iranian nuclear weapons program” and “the site of Iran’s largest missile assembly and production plant … built with North Korean assistance … Involved in the production of Scud-B and Scud-C surface-to-surface missiles by assembling components bought in North Korea and China …  Development and production … was said to include the Shehab 1 and Nazeat missiles …,  the Chinese M-11 …, HY-2 anti-ship and Chinese M-type missiles …, Nodong/Sahab-3 missiles … ”

According to this report, the Iranians are claiming both that it was an accident and that there was no explosion at all.

The Revolutionary Guard said the accidental explosion occurred while military personnel were transporting munitions.

The deputy governor of Iran’s Isfahan province on Monday said however he had no reports of an explosion in his region. “So far no report of a major explosion has been heard from any government body in Isfahan,” he was quoted as saying by the semi-official Mehr news agency. …

A top Israeli security official said that the recent explosion that rocked an Iranian missile base near Tehran [see our post Ah, mighty Worm, all praise to thee!, November 18, 2011] could delay or stop further Iranian surface-to-surface missile development.

This one should make delaying or stopping it even more likely.

Was it the work of the mighty Stuxnet computer worm again? Or of Duqu, son of Stuxnet?

We may never know. But don’t let not knowing delay or stop the celebrations.