Iran War: What Message Does It Send to Nuclear Powers in Asia?

With the US and Israel seeking to thwart Iran's ability to obtain a nuclear weapon, what message does the war send to Asia's nuclear powers? In particular, North Korea, a country that was the focus of US pressure only a few years ago about its nuclear program, and China, which is reportedly expanding its arsenal. Asia Specific host Mariko Oi speaks to nuclear policy expert Dr Zhao Tong from the Carnegie Endowment for International Peace and Wall Street Journal reporter Dasl Yoon in Seoul.