"No matter who is in power in the US, the true nature and the true spirit of the anti-North Korea policy will never change," Kim said, according to the country's state-run Korean Central News Agency (KCNA).
"The development of nuclear weapons be pushed forward without interruption."
The projects, according to Kim, are at various stages of development. He said "multiple-warhead guidance technology" is in the final stage, while studies in hypersonic flight that could be applied to new ballistic missiles "are complete," with North Korea "making preparations for their test and production" -- a possible sign that Pyongyang may be on the verge of resuming the type of missile testing anathema to Washington and Seoul.