WSJ reporters Yoon and Martin report from Pyongyang and Seoul about the vast changes and modernization that is coming to North Korea as the country learns lessons about the failures in the past. Aid from Russia and China, shipments of goods from a now industrialized China means that North Korea was posed to change in a short time if it took decisive steps to improve industry and the standard of living of the people. About $10 billion from Russia and support from China have made a difference. This means the kind of instability of a nuclear powered but poor and isolated North Korea, is less visible today than at previous periods in the last 50 years. This is happening with tighter sanctions than ever on North Korea by the US and EU nations. China and Russia have provided major inputs for the changes in North Korea and the concern for the living standards of the people that is visible today according to these reports.