Imagine a world in which you had Saddam Hussein, who had the capacity to make a weapon of mass destruction, who was paying suiciders to kill innocent life. Imagine what the world would be like with him in power. The idea is to try to help change the Middle East. Part of the reason we went into Iraq was we thought he had weapons of mass destruction. It turns out he didn't, but he had the capacity to make weapons of mass destruction.
China seems unpredictable because it has a distinct culture and social system. It is still a mystery to other parts of the world, even though the veil of China has been lifted many times as a result of globalization.
If we all could be a true friend to someone, praying and encouraging one person somehow, that's a first step in being part of making the world a better place.