The US, Japan and South Korea will not resume nuclear negotiations with North Korea until it stops its “provocative and belligerent” behavior and takes concrete steps to roll back its nuclear arms programme. Secretary of State Hillary Rodham Clinton told this to reporters in Washington, after meeting with Japanese Foreign Minister Seiji Maehara and South Korean Foreign Minister Kim Sung Hwan. The meeting was intended to demonstrate a serious response to recent North Korean actions, including its deadly shelling of a South Korea island last month and its announced expansion of a uranium enrichment capability that the U.S. and others see as a defiant and dangerous step.