The South, which has around 625,000 troops, is in the process of establishing a "three-axis system" to outgun the North's 1.1-million-strong military.

The three parts are the Kill Chain pre-emptive strike system, the Korean Air and Missile Defense and the Korea Massive Punishment and Retaliation strategy.

"(We) plan to improve surveillance and striking capability on the whole region of North Korea, expand the defense ability for core facilities and develop the capability for independent, massive retaliation," the ministry said.

The South's military plans to set up the three-tier system by the early 2020s, earlier than the initially planned mid-2020s, according to the strategy reported to the National Assembly.

The decision reflects the seriousness of the communist nation's development of weapons of mass destruction and the urgency of resolving the problem.

The North, ruled by 33-year-old Kim Jong-un, has conducted two nuclear tests and launched around 30 ballistic missiles since last year.

In connection with the Kill Chain project aimed at carrying out a preemptive strike against Pyongyang's nuclear and missile facilities in case of an imminent threat, Seoul plans to acquire five military satellites by 2022 in the 1-trillion-won "425 Project."

Before that, it plans to lease satellites.

"We are in talks with three to four countries," a senior ministry official told reporters in a background briefing. "We hope to sign a contract with a certain nation by early next year if possible." He would not give more details.

The military will also push for the early operation of new striking means to destroy the North's key military facilities. It's developing a missile with the range of 800km in addition to the line of shorter-range ballistic missiles and the 1,000-km-range Hyunmoo-3 cruise missile. (Yonhap)