Let history teach us

Let’s see….we let the communists take East Berlin and we took the west.  We let the communists take North Korea and we took the south. We let the communists take North Vietnam and we took the south.  Is there a pattern here that might help us get out of Iraq?  I’m hearing East Iraq and West Iraq…or North Iraq and South Iraq. We divide the country, get the hell out and let the civil war follow its natural course. Why is that so hard for all those big brains in DC to figure out?