North Korean ready for third nuclear test: Reports
North Korea was Iran's chief ballistic missile supporter for over ten years. In fact, the design of the Iranian long range ballistic missile (capable of being fitted with a nuclear warhead) was given to them by N. Korea.
But now the roles have reversed. It's interesting and important to note that now that Iran has leapt ahead in solid fuel rocket technology,
a large delegation of Iranian missile experts have been in N. Korea advising them on their recent long range launches.
Iran missile experts in North Korea 'to help with rocket launch' - Times Online
North Korea, Iran joined on missile work: U.S. general | Reuters
The Iranian regime is not only a threat to the mideast (both Arab states and Israel), but they are a serious threat to the US directly and indirectly.