Pukguksong-4

Pukguksong-4 is a two-stage, solid-fueled ballistic missile. As a further development from Pukguksong-3, it is significantly increased in size compared to the predecessor, with an estimated length and diameter of about and about , respectively. Other sources claimed Pukguksong-4 to be shorter than Pukguksong-3. It is likely designed to be fitted with Sinpo-C class submarine, which was being built in 2020, capable of carrying 3–4 SLBMs. As portions of the Pukguksong-4's engine appear to be filament-wound, the missile has a heavier payload, a better range and is lighter compared to the previous missiles. The maximum range of Pukguksong-4 is estimated from with a payload to with a payload. It is alleged to be MIRV-capable, but it remains unconfirmed. Daily NK's sources state that the two versions of Pukguksong-4 are: a shorter version, whose diameter is larger than Pukguksong-3, and a slightly longer version. ==History==

Pukguksong-4 made its public debut in a military parade commemorating the 75th anniversary of the founding of the Workers' Party of Korea on 10 October 2020. According to German expert Norbert Brügge, it was seen with a Korean People's Army Ground Force escort. A further development of Pukguksong-4, called Pukguksong-5, was displayed on 14 January 2021 during a military parade. Pukguksong-5, believed to be similar to Pukguksong-4, appears to be larger than its predecessor. There have been no known test for Pukguksong-4 so far. However, an alleged flight test occurred on 19 October 2021. Initially, the missile used for the test-fire was supposed to be some types of SLBMs, including Pukguksong-4. Later, the missile used in the 19 October 2021 launch was judged to be Hwasong-11S, an underwater-launched variant of Hwasong-11A (KN-23). ==See also==