The dictator has threatened indiscriminate nuclear strikes against the United States and South Korea
North Korean leader Kim Jong Un claims his country has miniature nuclear warheads which are small enough to be mounted on ballistic missiles.
The dictator has reportedly called for his military to be ready to attack the US and South Korea with its nuclear arsenal , according to state media.
The announcement on Wednesday is the latest rhetoric from North Korea after it came under new UN and bilateral sanctions.
US and South Korean troops began large-scale military drills this week, which the North calls "nuclear war moves" and threatened to respond with an all-out offensive.
Kim's comments are his first direct mention of the claim that North Korea has successfully miniaturised a nuclear warhead to be mounted on a ballistic missile, which is widely questioned.
"The nuclear warheads have been standardised to be fit for ballistic missiles by miniaturising them," KCNA quoted him as saying, adding "this can be called true nuclear deterrent."
"He stressed the importance of building ever more powerful, precision and miniaturised nuclear weapons and their delivery means," KCNA said.
Read more : North Korean dictator Kim Jong-un threatens 'indiscriminate' NUCLEAR STRIKES against US and South Korea
Kim also inspected the nuclear warheads designed for thermo-nuclear reaction, KCNA said, referring to a hydrogen bomb that the country claimed to have tested in January.
North Korea conducted its fourth nuclear test on January 6 claiming to have set off a miniaturised hydrogen bomb, which was disputed by many experts and the governments of South Korea and the US
The blast detected from the test was simply too small to back up the claim, experts said at the time.
The UN Security Council imposed harsh new sanctions on the isolated state last week for the nuclear test.
It launched a long-range rocket in February drawing international criticism and sanctions from its rival, South Korea.
Read more : North Koreans sent to prison camps for using mobile phones to contact relatives who fled abroad
On Tuesday, South Korea announced further measures aimed at isolating the North by blacklisting individuals and entities that it said were linked to Pyongyang's weapons programme.
China also stepped up pressure on the North by barring one of the 31 ships on its transport ministry's blacklist.
But a UN panel set up to monitor sanctions under an earlier Security Council resolution adopted in 2009 said in a report that it had "serious questions about the efficacy of the current United Nations sanctions regime."
North Korea has been "effective in evading sanctions" by continuing to engage in banned trade, "facilitated by the low level of implementation of Security Council resolutions by Member States," the Panel of Experts said.
"The reasons are diverse, but include lack of political will, inadequate enabling legislation, lack of understanding of the resolutions and low prioritisation," it said, referring to the incomplete enforcement of sanctions.
The dictator has reportedly called for his military to be ready to attack the US and South Korea with its nuclear arsenal , according to state media.
The announcement on Wednesday is the latest rhetoric from North Korea after it came under new UN and bilateral sanctions.
US and South Korean troops began large-scale military drills this week, which the North calls "nuclear war moves" and threatened to respond with an all-out offensive.
Kim's comments are his first direct mention of the claim that North Korea has successfully miniaturised a nuclear warhead to be mounted on a ballistic missile, which is widely questioned.
"The nuclear warheads have been standardised to be fit for ballistic missiles by miniaturising them," KCNA quoted him as saying, adding "this can be called true nuclear deterrent."
"He stressed the importance of building ever more powerful, precision and miniaturised nuclear weapons and their delivery means," KCNA said.
Read more : North Korean dictator Kim Jong-un threatens 'indiscriminate' NUCLEAR STRIKES against US and South Korea
Kim also inspected the nuclear warheads designed for thermo-nuclear reaction, KCNA said, referring to a hydrogen bomb that the country claimed to have tested in January.
North Korea conducted its fourth nuclear test on January 6 claiming to have set off a miniaturised hydrogen bomb, which was disputed by many experts and the governments of South Korea and the US
The blast detected from the test was simply too small to back up the claim, experts said at the time.
The UN Security Council imposed harsh new sanctions on the isolated state last week for the nuclear test.
It launched a long-range rocket in February drawing international criticism and sanctions from its rival, South Korea.
Read more : North Koreans sent to prison camps for using mobile phones to contact relatives who fled abroad
On Tuesday, South Korea announced further measures aimed at isolating the North by blacklisting individuals and entities that it said were linked to Pyongyang's weapons programme.
China also stepped up pressure on the North by barring one of the 31 ships on its transport ministry's blacklist.
But a UN panel set up to monitor sanctions under an earlier Security Council resolution adopted in 2009 said in a report that it had "serious questions about the efficacy of the current United Nations sanctions regime."
North Korea has been "effective in evading sanctions" by continuing to engage in banned trade, "facilitated by the low level of implementation of Security Council resolutions by Member States," the Panel of Experts said.
"The reasons are diverse, but include lack of political will, inadequate enabling legislation, lack of understanding of the resolutions and low prioritisation," it said, referring to the incomplete enforcement of sanctions.