Forgot: Russia shares border with both North Korea and Iran.
Missile could be easily transported from North Korea to Iran and impossible for US/Allies to stop as well as China.
Pardon the PING, but someone might be able to find info on how money OBAMA gave Iran for Nuke deal ended up in North Korea for North Korea to develop H-Bomb warhead and long range missile. North Korea gets badly needed money, and Iran gets something to strike ISRAEL with.
IMPORTANT!
I saw it somewhere but cannot find it now...