Read the article. It makes it clear that North Korea doesn't have the machinery or materials to make the bills. Iran might, but why make so little? If they're doing it then one would expect them to open the floodgates and produce billions of dollars worth and destroy the faith in the $100 bill. It makes more sense that these bills are being used to track some activity be it drugs or terrorists. In any case it's an interesting article.
The fake bills are from North Korea. American money in $100 denominations is carefully scrutinized in the PRC. They know what’s going on.
Look at the source CIA. Many other sources have Iran printing billions of dollars per year. North K. did not print as much. Who bought the treasury’s old machines?
Did you think that they made it clear? All they said was that one Swiss official doubted the North Koreans could have done it based on the quality of actual North Korean currency.
If it is the North Koreans, it appears that they don't want to destabilize U.S. currency, rather just print enough hard currency to pay for Hennessey and Mercedes. They could easily have stockpiled OVI and other printing supplies (paid for with hundred dollar bills).
BTW, the Germans did counterfeit British currency during World War II and used it to pay off spies.
The Iranians have done it before, what makes you think they would not do it again? They did it for almost 20 years.
Just 18 moths ago, they attempted to set up a petro-euro market.
It seems that we cannot even gauge the extent of the N Korean nuclear weapons program let alone their printing capabilities.