Like all earlier cases carried below 10 kms depth but certainly not covered with all the measures usually taken such as more digging and grapples of tests. So the signal is clear…

And acknowledged in front of Al Jazeera :

According to an Iranian source, 80% of their nuclear tests are conducted with depleted uranium magnet-harvested from Iraq and Afghanistan (plutogenized typically in sodium). Making the issue of the Iranian bomb more taboo than it seems. Especially as the main organisation against a nuclear Iran sounds in French like “Uranium appauvri on NIe” (UANI).

Iran has indeed digged deep for its underground nuclear tests (beyond the CTBTO limit) for several years already. See here, here, here and here for instance. The Seijjil missile has a small Teller-Ullam warhead. This can nevertheless be intercepted as shown already by the interception of most conventional missiles fired by Iran a few days ago (the Seijjil’s radar track is above that of these conventional missiles, a heat-detecting warhead for instance can destroy it without too much doubts).