UN, experts poised to confirm any N. Korean blast

With North Korea appearing set to detonate an atomic device, the UN agency that detected two previous tests says it is prepared to confirm an explosion when it takes place. But experts say it might be difficult to establish whether the blast is nuclear in nature.


The best indication of a test will be seismic tremors and gases released into the air, phenomena that the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty identified from previous testing. (AP)