From Global Security Newswire:
Iran and North Korea have formed an information-sharing "coalition" aimed at bolstering their respective ballistic missile capabilities, the officer who leads the U.S. Missile Defense Agency said yesterday (see GSN, June 10).
"It really is an international effort going on out there to develop ballistic missile capability between these countries," Lt. Gen. Patrick O'Reilly said, according to Reuters.
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Update: North Korea, Iran joined on missile work - U.S. general -- Reuters
My Comment: They both have the same missiles, so one can logically assume that they are sharing the same information and data.