Describing the US as the principal enemy, Rodong Sinmun, the outlet of the North's ruling Workers Party, urged North Korean soldiers and citizens to counter "imperialist reactionaries" in an armed struggle.
"Countering them with arms is the only way to defend the national sovereignty and peace and achieve the victory of the revolutionary cause," it said.
Rodong accused the US of forcing weaker countries to accept "brigandish demands."
"Courageously fighting with the imperialist reactionaries in the do-or-die spirit makes it possible to defend the national sovereignty and peace and achieve victory of the revolutionary cause," it said.
The North's second official newspaper, Minju Josun, said the non-aggression treaty serves as the "reasonable and realistic step to bridge over the grave situation prevailing in the Korean peninsula."
Miju Josun also blasted Washington's "unilateral and high-handed attitude" for clouding the prospect of settling the issue.
"If the US gives legal assurances of non-aggression including the non-use of nukes against the DPRK through the non-aggression treaty, the DPRK will be ready to clear the US of its security concerns," it added.
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