I’m not sure this has anything to do with anything, but I just found this bit of a 21 March North Korean radio broadcast:
On 16 March, during an interview with a daily, Iranian Foreign Minister Manuchehr Mottaki reiterated, once again, his country’s right to peaceful use of nuclear energy.
He said that Iran has the right to use nuclear energy for a peaceful purpose and uranium enrichment activity is a central issue for his country.
Given that, he stressed that his government will continue to promote uranium enrichment activity and Iran will never give up its basic right whatever price it has to pay.
It _is_ an example of the North Koreans watching what the Iranians do…not trivial, given the lack of available public evidence.