They introduced eight new copters for naval operation from a European military industrial complex in June and December last year, according to the south Korean online paper E-daily.

Meanwhile, in recent years they reinforced more than 1,200 troops and different types of missiles on the hot-spot five islands in the West Sea of Korea to recover the disgraceful defeat in the west sea skirmish, according to the south Korean paper Munhwa Ilbo.

They are going to deploy 3,000-ton submarines capable and several high-speed warships there within few years.