I've always wondered about these so called "technical issues" in articles like this. If it refers to the lack of some kind of technology, that could be one thing ... but that would most liklely be overcome fairly easily via black market means.
The "know how," though, I question. Iran has key friends in Russia, China, N. Korea, and Pakistan that have all overcome these technical issues and some in these countries, esp N. Korea and Pakistan, seem very intertested in providing Iran technology and info on this process. If they already have overcome these issues, why would they be issues for Iran? They have what seems to be open sources for info on how to build nukes from "a" to "z," what technical issues could possibly trump that?
That is probably the really big story. Every estimate seems to push back the date of success by a year or two, as if to say to us, "don't worry." The news media wants to lull us into a false sense of security. Don't worry, it can wait until the Democrats take over the White House. Of course, by then we will have blown our opportunity to put the smackdown on them, but we blew the first opportunity when we peed ourselves over the hostage situation in 1979. So really, we cannot win against Iran, when the leftists in America are their biggest allies.