North Korea said Friday that nuclear talks with the United States "will never be resumed" unless Washington halts what Pyongyang said were "hostile acts" and demands of "unilateral disarmament," warning of a "fiercer" response if this continues.

In a statement carried by the North's official Korean Central News Agency, an unidentified Foreign Ministry spokesman delivered Pyongyang's latest warning to the U.S. in the wake of President Donald Trump's failed summit with leader Kim Jong Un in Hanoi in February.

"We hereby make it clear once again that the United States would not be able to move us even an inch with the device it is now weighing in its mind, and the further its mistrust and hostile acts towards the DPRK grow, the fiercer our reaction will be," the spokesman said, using the acronym for the North's formal name, the Democratic People's Republic of Korea.