As for my last point, many serious wars are started by antisocial personalities who attain political power, Stalin, Hitler, Saddam, Pol pot, Putin, Trump etc, the list is endless. Some conflicts are about land and resources however, such as in Israel, both sides know what they want and it is tangible. Some are wars of national independence like Vietnam, the American revolution and Ukraine. But the root cause of most modern conflicts are an antisocial personality who rises to power and who uses the usual methods. These days they face a lot of international head wind, as Putin is finding out. Information technology makes things happen faster, including politics, Putin is finding that out too, as are the republicans apparently.