Experts say Kim's public demand for more weapons-grade nuclear material is a calculated move to take denuclearisation off the table North Korean leader Kim Jong-un's latest public push to expand his country's nuclear arsenal is part of a calculated move to pressure Washington into accepting arms reduction talks instead of full denuclearisation,

North Korean leader Kim Jong Un has inspected a facility that produces nuclear material and called for bolstering the country’s nuclear capability, state media reports.