Is it better to have disposable cities or disposable armies fighting one war after another as in the United States? What do I mean? I mean to say that if we are going to spend money so people have jobs, rebuilding cities may be a better choice than waging wars as the United States has done in Vietnam, Iraq and Afghanistan. While China keeps spending money rebuilding cities and keeping people working, the US keeps spending more money inventing new ways to kill people with weapons that were once only read about in science fiction novels.