I wonder if this is a high-stakes scam? N.K. reportedly told China yesterday that they intended to conduct two more nuclear tests in 2013 if direct talks with the U.S arent't held. Suppose Iran did pay NK for witnessing this previous test. NK threatens to conduct two more in 2013 without direct talks. The U.S. or China, etc. pay them not to and NK/Iran split the proceeds.
Iran paid North Korea tens of millions of dollars to witness the most recent nuclear test, Japanese news agency Kyodo reported this weekend.