Answer: North Korea
Notes: Recently, North Korea unveiled its most powerful intercontinental ballistic missile (ICBM) named Hwasong-20 at a military parade. Hwasong-20 is an intercontinental ballistic missile (ICBM) developed with a solid-fuel engine made of carbon fiber composite materials. Solid-fueled missiles can be quickly launched and are harder to intercept than liquid-fueled ones. The missile has an estimated range of over 15,000 km, capable of reaching distant continents. It features an advanced guidance system combining Inertial Navigation System (INS) with GPS or optical sensors for high accuracy.
