[2] Assuming a range of 3,200 km (2,000 mi), the Musudan could hit any target in East Asia (including US military bases in Guam and Okinawa).
Once the fuel/oxidizer combination are fed into the missile, it could maintain a 'ready to launch' condition for several days, or even weeks, like the R-27 SLBM, in moderate ambient temperatures.
[3] Before its test flight, it was believed that there was a possibility that the Hwasong-10 would use the Nodong's kerosene and corrosion inhibited red fuming nitric acid (IRFNA) propellants, reducing the missile's range by about half.
In 1992, a large contract between Korea Yon’gwang Trading Company and Makeyev Rocket Design Bureau of Miass, Russia was signed.
The agreement stated that Russian engineers would go to the DPRK and assist in the development of the Zyb Space Launch Vehicle (SLV).
[6] Hwasong-10 was first revealed to the international community in a military parade on 10 October 2010 celebrating the Workers' Party of Korea's 65th anniversary, although experts believe these were mock-ups of the missile.
It had been displayed in the April 2017 military parade on the Hwasong-10 mobile launcher, and the Hwasong-12 may be intended to replace the Hwasong-10 which has been shown unreliable during its test programme.