US slaps additional sanctions against North Korea against the regime in Pyongyang. Furious over sanctions, N.Korea vows to launch a pre-emptive nuclear strike against the US. US says it is fully capable of defending against any ballistic missile attack. Attacking US would be suicide, Senator Bob Menendez tells N Korea.Now that terrorist republic of Pakistan has passed on successful nuclear weapon to north korea, north korea warns USA of a perrmptive strike…..