Kim Jong Un says North Korea is developing tactical nukes, new warheads and a nuclear-powered submarine

North Korean leader Kim Jong Un said his country is developing new weaponry including a nuclear-powered submarine, tactical nuclear weapons and advanced warheads designed to penetrate missile defense systems.

In comments published Saturday, Kim said North Korea is pushing ahead with the armaments to deter the United States, comments that appear to show President Donald Trump's strategy of high-level engagement with Pyongyang -- including three historic in-person meetings between Trump and Kim -- failed to convince Pyongyang to stop its pursuit of a modern nuclear arsenal. "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."