North Korea has yet to demonstrate that its warhead can survive the intense heat and friction created by re-entry. When North Korea resumed missile tests in 2019 following the collapse of the Kim-Trump talks, the tests featured three new weapons, code-named KN-23, KN-24 and KN-25 by outside experts. Unlike its older missiles that used liquid fuel, all three of the new missiles used solid fuel. At a military parade earlier this year, North Korea displayed what looked like a bigger, upgraded version of KN-23. The new missile was developed to be larger than KN-23 in order to carry a bigger warhead and more fuel.

Source: International New York Times March 26, 2021 10:27 UTC