Pyongyang (North Korea), Dec 22 (EFE). North Korea's leader said Friday his country has achieved a rapid development of its strategic weaponry and is capable of posing a substantial nuclear threat to the United States, state news agency KCNA quoted him as saying. <br /> <br />ARCHIVE FOOTAGE. INCLUDES FOOTAGE COURTESY OF THE UN, THE WHITE HOUSE AND KCTV.<br /> <br />Keywords: efe,north,korea,usa,crisis,nomonetizar
