North Korea's leader Kim Jong Un on Saturday praised the country's "super-large" Multiple Rocket Launcher (MRL), which he claims will put all of South Korea within range and can be loaded with tactical nuclear warheads. [Source: CNN]

North Korean leader Kim Jong Un is calling for an “exponential increase” in his country’s nuclear weapons arsenal in response to what he claims are threats from South Korea and the United States, Pyongyang’s state media reported Sunday.

Kim’s comments come as North Korea twice over the weekend tested what it claimed was a large, nuclear-capable, multiple-launch rocket system that could put all of South Korea in its range, according to a report from the Korean Central News Agency (KCNA).

Speaking on New Year’s Eve on the final day of a six-day plenary session that reviewed 2022, Kim said South Korea has become an “undoubted enemy” and its main ally, the US, has increased pressure on the North to the “maximum” level over the past year by frequently deploying its military assets to the Korean Peninsula.

In response, Kim said in the coming year that Pyonyang must mass produce tactical nuclear weapons while developing a new intercontinental ballistic missile (ICBM) that would give the North a “quick counterstrike capability,” according to the KCNA report.

Kim’s comments come at the end of a year that saw his regime test more missiles than at any time in North Korean history, including an ICBM that could in theory strike the US mainland.

On Saturday, in its 37th day of missile tests in 2022, North Korea fired at least three short-range ballistic missiles from a site south of Pyongyang, according to South Korea’s Joint Chiefs of Staff.

It followed that early Sunday with another test. North Korea said both Saturday’s and Sunday’s tests were of a 600mm multiple-launch rocket (MRL) system. Most multiple-rocket launch systems in service around the world are around 300mm in size.

The 600mm MRL was first introduced three years ago, and production has been increased since late October of 2022 for deployment, Kim said in his speech to the plenary session on Saturday, according to KCNA. He later added that an additional 30 of the 600mm MRL will be deployed to the military simultaneously.

Kim said the weapon is capable of overcoming high landforms, can consecutively strike with precision, has all of South Korea in its shooting range and can be loaded with tactical nuclear warheads, according to the KCNA report.

“Prospectively, as a key offensive weapon of our military forces, it will carry out its own combat mission to overwhelm the enemy,” Kim said.

South Korea’s Defense Ministry later responded to Kim’s comments, calling them “provocative language that seriously harms peace and stability of the Korean Peninsula.”

The ministry urged Pyongyang to “immediately stop” developing nuclear weapons and return to the path of denuclearization, warning that the “Kim Jong Un regime will come to an end if North Korea attempts to use nuclear weapons.”

The ministry vowed to maintain its military readiness posture to “firmly respond” to any North Korean threats, adding that the military will strengthen its “three-axis” defense system designed to counter North Korea’s nuclear and missile threats.

The three-axis defense system consists of the Kill Chain preemptive strike system, the Korea Air and Missile Defense system and the Korea Massive Punishment and Retaliation plan, an operational plan to incapacitate the North Korean leadership in a major conflict.

South Korea’s President Yoon Suk Yeol said on Sunday during a phone call with military chiefs that North Korea will continue to conduct constant nuclear and missile provocations, and South Korea’s military should respond with clear retaliation, his office said.