The fall of Baghdad has been proclaimed, though there is still fighting in various parts of the city. Atthis point, one can't tell how long resistance will continue. Historically there have often been cases offoreign occupiers defeating large scale enemy forces, only to face years of low-level combat. The Israeliswere at first welcomed in southern Lebanon for eliminating an overbearing Palestinian presence. But for nearlytwo decades, until Israel chose to withdraw its troops, resistance and casualties continued.