North Korean leader Kim Jong Un oversaw a successful test of a new intermediate-range hypersonic ballistic missile (IRBM) on Monday, state media KCNA said on Tuesday, pledging to accelerate the country's nuclear and missile capabilities.

North Korea said Tuesday it has successfully test-fired a new intermediate-range ballistic missile (IRBM) tipped with a hypersonic warhead, claiming that the weapons system will reliably deter any rivals in the Pacific region.

North Korea's claim of what it called a successful launch of a new intermediate-range ballistic missile (IRBM) tipped with a hypersonic warhead is presumed to be "deception," South Korea's military said Tuesday.