go to stamps.com/tv and never go to the post office again. albreakthrough withyou back. non-drowsy allegra® for fast 5-in-1 multi-symptom relief. breakthrough allergies with allegra®. we continue to follow the breaking news out of north korea. the country says it just successfully tested a hydrogen bomb. china and japan have confirmed that claim. the u.s. and south korea have not gone that far but say they also detected seismic activity. a norwegian monitoring group said the blast had an estimated explosive yield of 120 kilotons, eight times the strength of the bomb dropped on hiroshima japan. >> the reports of the blast come