Promoting peaceful atomic energy while keeping nuclear weapons in check will require a strong International Atomic Energy Agency. Its current struggle to pick a new director shows how high the stakes are.
China's deep reserves and continued growth put it in a position of strength.
The US has said it won't use destroyers to shoot missiles down. But they could gather intelligence.
Readers write about parental participation in education, making the case for women as leaders, why many countries should be concerned about cyber attacks from China, and why Muslims, too, should be careful in their speech to others.
The President's plan for the increasingly troubled region is ambitious, although his goals are more limited than Bush's.