North Korea 'could be preparing for third nuclear test' | World news | guardian.co.uk

North Korea 'could be preparing for third nuclear test' | World news | guardian.co.uk: "North Korea appears to be preparing for a third nuclear test as early as next March, a South Korean newspaper has reported, as a US politician travelled to Pyongyang with a message for it to 'calm down'.

US and South Korean intelligence have been watching North Korea's nuclear sites for any activity. Analysts say it could use a test to try to gain leverage in the international talks it wants, and to secure aid to prop up its destitute economy."