North Korea says it now possesses "overwhelming" military power that can "effectively deter the war ambitions of imperialists."
The country's ruling Workers' Party newspaper, Rodong Sinmun, published an editorial on Thursday to mark the 76th anniversary of the founding of the country's military, the Korean People's Army.
The editorial says North Korea will never allow anyone to infringe upon its right to autonomy and existence.
The newspaper carried a photo of the solid fuel ICBM-class Hwasong-18. North Korea conducted a launch drill of the missile last December.
Another photo shows what the North calls a "tactical nuclear attack submarine." A launch ceremony for the submarine was held last September.
The editorial is apparently intended to stress North Korea's confrontational stance toward Japan, the United States and South Korea, by displaying the country's progress in nuclear and missile development under its five-year defense plan.
The newspaper also reports that North Korea decided to scrap the law on inter-Korean economic cooperation at a meeting of the Standing Committee of the Supreme People's Assembly.
Rodong Sinmun reported on its front page that the North's leader, Kim Jong Un, inspected factories that make food products and daily goods in Kangwon Province in the country's east on Wednesday.
North Korea has been implementing "the regional development 20×10 policy" this year. It aims to build factories in 20 areas every year by mobilizing military personnel, to help boost regional economies and improve living standards within a decade.
Observers say Kim may want to show the public that he has consideration for their daily lives, in addition to focusing on the military buildup.