[8] The range and accuracy of the 2K6 Luna were unsatisfactory, but the Soviets refused to supply ballistic missiles to limit tensions in Korea.

[7] North Korea sought a domestic missile production capability by 1965, and began making military and industrial preparations shortly afterward.

[8] A joint development program with China of the DF-61 missile began in 1977, but was cancelled in 1978 due to Chinese domestic politics.

[7][10] With relations between Egypt and the Soviet Union deteriorating during the mid-1970s, the Egyptians no longer could purchase ballistic missiles from the Soviets, and to deal with the loss of its sole supplier, the Egyptians helped North Korea to reverse-engineer the R-17 in hope of eventually setting up a production line with North Korean assistance.

[2] The Hwasong-5 is mounted on a North Korean copy of the MAZ-543 transporter erector launcher vehicle or a converted civilian truck.

While its unknown if Egypt successfully managed to manufacture them locally, it is known that North Korea helped the Egyptians repair and refurbish their aging inventory of Soviet-built Scud-B systems.