"I take it you are suggesting the 'sophisticated IED's' in Iraq were courtesy Iran?"
A mutual friend of ours was pulled out of company command in Mosul to work this problem in 2003. He is studious and has retained an avid interest here. Further his contacts to the Iraqi and Afghani "street" remain superb.
Lots of in-house Iraqi army explosives expertise. Certainly lots of post-OIF PHASE IV arms depot ammo lying around so they evolution from IEDs to VBIEDs was logical and easy...
Always seeking a bigger bang...
EFPs, though Mr. Engineer, entail the focused chemical energy of a shaped charge capped by a solid copper core molten penetrator. Very nasty, directed, and metallurgically beyond Iraqi insurgent means. They can attack from below, the sides, even the top if so able to be positioned unseen. Then there was the locales of these attacks. We weren't seeing them along the al-anbar ratus-ratus line out in Tal Afar. They were whacking us in Badr City on south through the shia belt down to the Brits around Basra.
Shiny Capstar may (or may not OPSEC) be able to confirm further on Iraq and Afghanistan but we've little general doubt. I don't think that he faced a major IED threat in A-stan though I'm sure it was an issue in Basra. Maj. Gen. de Kruif was emphatic about the south of Afghanistan and they work and live with the problem daily.
"So if the US reports of Iranian supplied weapons were not propaganda under the Bush Admin. for leverage, then it might mean that while the Iranian Mullah's are willing to supply the Taliban Mullah's with small arms, they are not willing to give them any possible advantage that might be used against the Iranians later."
I think it's a non-issue with weapons myself. I don't sense an absence of weaponry nor ammo throughout the region. Seems possible with cash to secure weapons easily and with money, the possibility of secure and sustained supply without reliance upon others. I'm certain that the brigandization of communities and the opium trade have been an absolute boon for the taliban.
Somehow, without an ounce of knowledge, I also sense one hell of a lot of gulf oil money flowing that way.
But then it could simply be because I've a congenital distrust bordering on phobia over salafi/wahabbists with too much time and money on their hands.