North Korea warns US of 'undesired consequences' if it does not change course

North Korea has told the US it will face “undesired consequences” if it fails to readjust its position on nuclear disarmament, in the latest of a series of warnings to Washington and its allies in recent months.  Kim Jong-un, the North Korean leader, earlier this month issued a year-end ultimatum to resolve stalled negotiations over the dismantlement of his nuclear and missiles programme after direct talks with Donald Trump, the US president, in Hanoi in February did not produce