North Korea will rapidly accelerate development of its nuclear arsenal, leader Kim Jong Un said while overseeing a vast military parade showcasing his most powerful intercontinental ballistic missiles, state media reported Tuesday. Despite biting sanctions, North Korea has doubled down on Kim’s military modernisation drive, test-firing a slew of banned weapons this year while ignoring US offers of talks — as analysts warn of a likely resumption of nuclear tests. Dressed in white military uniform trimmed with gold brocade, Kim watched as tanks, rocket launchers and his largest ICBMs were parad…