Rodong Sinmun Friday says this in a commentary.

It goes on:

The above-said step taken by the DPRK is the indisputable exercise of its legitimate right to self-defence.

However, the U.S. is misleading the public opinion, describing the toughest countermeasures taken by the DPRK one by one as a "challenge" and "provocation" against the international community.

The DPRK's access to nuclear weapons is the direct result of the U.S. hostile policy toward the former.

By persistently pursuing the said policy, the U.S. pushed the DPRK to having access to nukes.

It has stepped up its hostile policy towards the DPRK and its moves for a nuclear war against the latter since it emerged a nuclear weapons state.

The DPRK codified the strategic line of simultaneously pushing forward the economic construction and building of nuclear force to cope with the U.S. persistent moves to isolate and stifle the DPRK.

It is ready to respond to any war method desired by the U.S. imperialists, be it a conventional war or a nuclear war or cyber warfare.

It had access to nuclear weapons not to be recognized or approved by others.

As the revolutionary armed forces of the DPRK had already warned, they will continue taking stronger countermeasures as long as the U.S. persists in its hostile policy toward the former.