Rodong Sinmun Friday says in an article in this regard:

The nuclear weapons of the DPRK are aimed to defend itself, prevent a war on the Korean peninsula and ensure peace and security in Northeast Asia from A to Z.

The U.S. is resorting to a trite method of meeting its interests by pulling up others.

It seeks to realize its ambition for dominating Northeast Asia and other parts of the Asia-Pacific region by taking issue with "nuclear and missile threat" from the DPRK. There are in the region those countries capable of challenging the U.S. Recently these countries are making faster progress than expected and more closely cooperating with each other. This is irritating the U.S. seeking its hegemonic position in the region.

The reality requires the DPRK to further bolster up its nuclear deterrence for self-defence for ensuring peace and security on the Korean peninsula and in other parts of Northeast Asia and, furthermore, in the rest of the world. This is an exercise of an inviolable sovereign right of the DPRK as it is entirely just and designed to protect the destiny of the nation and the supreme interests of the country.

The service personnel and people of the DPRK will never allow anyone to encroach upon its dignity and sovereignty.

The U.S. had better ponder over this.