Senior regime official says country ready for nuclear war
Kim Jong-Nam, the half-brother of N Korean supremo Kim Jong-Un, was killed on Monday at the airport
Kim Jong-Nam was killed on Monday
Detonation devices trialled as an angry reaction to deployment of US missile defence system in South; Kim Jong-un monitoring activities
The country's legislative body, the Supreme People's Assembly (SPA), unanimously voted Kim as head of the State Affairs Commission
Ko Yong-Suk was the sister of Ko Yong-Hui, one of former North Korean leader Kim Jong-Il's wives and mother of Kim Jong-un
Kim was previously first secretary of the party
The move comes amid rising tensions on the Korean peninsula due to international sanctions imposed on Pyongyang