First, individual problems and those of a nation both happen because of the lack of knowledge of reality. There is a great need for education to show the true reality. Second, because of over population the world has become smaller. Each nation heavily depends on other nations, but in our minds we still have a large gap between reality and obsession. To reduce this gap we need clear awareness.
Humanity is the key.
Each nation needs humanity. Only then can we get better. The rich and poor share the same land. The gap is wrong. If the poor are not satisfied there is conflict.