North Korea said it won’t agree to talks with the U.S. and is now focused on its ability to destroy the country with conventional, nuclear and cyber-warfare attacks.

Kim Jong Un’s regime accused the U.S. of “inching closer to the stage of igniting a war of aggression” by stepping up its sanctions, holding military drills with South Korea and predicting the future collapse of the administration, the official Korean Central News Agency said, citing a statement from the National Defense Commission.

“Since the gangster-like U.S. imperialists are blaring that they will ‘bring down’ the DPRK, oblivious of its poor plight facing adverse fate, the army and people of the DPRK cannot but officially notify the Obama administration of the U.S.A. that the DPRK has neither need nor willingness to sit at negotiating table,” KCNA said, using the acronym for the Democratic People’s Republic of Korea.

The rejection of talks comes after a rush of diplomatic activity by the U.S. and North Korea’s ally China to prod the regime back to the table, potentially for bilateral talks and eventually six-country negotiations that offered aid in return for an end to its nuclear program. Kim raised expectations of progress when he suggested in a Jan. 1 speech he’d be open to meeting South Korea’s President Park Geun Hye.