Kim Jong-un's sister issues warning to US amid military drills with South Korea

North Korean leader Kim Jong-un's sister Kim Yo Jong accused US of escalating tensions through military drills with South Korea and Japan, warning of a "more offensive" response. She called the drills a US-led "war game". She warned the "enemy" that if North Korea's security is threatened, its military will "mobilise all means available to cope with it," KCNA reported.