Following the unanimous resolutions of UN reached yesterday to increase financial and economic sanctions on three individuals and the North Korea economy, Pyongyang has decided to cancel all non-aggression pact agreements reached with the South Korea in 1991 and also abrogated hotline between North and South. Pyongyang believes that US and the South Korea are planning to invade it or launch nuclear war against the country but Pyongyang has promised a crushing response to any iota of aggression against it, the North Korean has even vowed to engage in nuclear war with US if the United States go ahead to hold joint military drill(war games) with South Korea which is schedulled to start on April 1. Though to many people North Korean is not as strong as US but the country is highly dangerous in terms of nuclear weapons possession which is regarded as WMD.