Kim Jong-un, the supreme leader of North Korea, has claimed that the country has miniaturised nuclear warheads that can be mounted on ballistic missiles, according to the state media.
The front page of a newspaper in North Korea showed Kim standing beside a purported mock-up of a miniaturised nuclear warhead during a meeting with his top nuclear scientists when the announcement came.
"The nuclear warheads have been standardised to be fit for ballistic missiles by miniaturising them. This can be called true nuclear deterrent," KCNA quoted him as saying reported Guardian.
Kim also stressed the importance of building ever more powerful, precision and miniaturised nuclear weapons and their delivery means, report said.
Kim also ordered improvements in power and precision of its arsenal.
Meanwhile, South Korea said it was analysing the objects shown in the photos.
South Korea yesterday announced measures aimed at isolating pyongyang by blacklisting individuals and entities that it said were linked to their weapons programme.
Kim had called for his military to be prepared to mount pre-emptive attacks against the United States and South Korea following a new strict UN sanctions on Pyongyang for conducting its fourth nuclear test in January and launching its long-range rocket a month later.
North Korea even threatened to turn Washington and Seoul into 'flames and ashes' as the joint military drills began this week, which it calls nuclear war moves and threatened to respond with an all-out offensive.
Such threats from Kim have been a common one, since he took power after the dead of his dictator father in 2011.
