Although the nations of the world have pledged to respect a system of international law and global responsibility, the recent behavior of the governments of Russia, Israel, and the United States, based on the nationalist fantasies of their leaders, provides a sharp challenge to this arrangement.  If humanity is to survive in coming decades, it is imperative that reckless competition and conflict among nations give way to cooperation and collective action.  No nation can go it alone, for we are all part of one world and must act accordingly.