The missile is suspected to be a derivative of the Russian Iskander missile. From video and pictures published by the South Korean military and media, the Hyunmoo-II missile's head is similar to the Russian Iskander missile and the double cone structure of China's M20 missile, missile shape and Iskander missile is very similar. Even the tail is the Iskander-style truncated delta wing. There is precedent for cooperation on missile technology between Russia and South Korea — Seoul's KM-SAM air-defence system is based on the Russian 9M96E missile developed for the S-400 Triumf (SA-21 "Growler") system — but there are also resemblances with the American ATACMS and Israeli LORA missiles.
