The Democratic People's Republic of Korea (DPRK)'s ⁠test of a solid-fuel ‌rocket ‌engine is ‌intended for ‌intercontinental ballistic missiles (ICBM) ⁠built ‌with carbon fiber ‌to extend range ​and allow for delivery of heavier ⁠and ⁠possibly ⁠multiple warheads, ​South ​Korean ‌lawmakers said, ‌citing the ⁠country's intelligence agency.