different ways people are experiencing guns in both urban and royal areas of america. >> ron brownstein, errol louis, thank you. thank you. tensions ratcheting up on the korean peninsula. south korea resumes propaganda broadcasts. all while pyongyang celebrates the 33rd birthday of its reclusive leader. will ripley live in pyongyang with more. will? >> reporter: michaela, the front page of north korea's main state-run newspaper shows this picture of the supreme leader kim jong-un signing the order to test what the north korean regime claims is an h-bomb, though that claim has been disputed by many outside observers around the world. we visited a science center in pyongyang that just opened within the past week. this building is actuallyctuall. in the middle of the building is