The U.S. has been unwilling to kill a sufficient number of civilians, such that the remaining civilians desire their leadership to beg for peace.
Fanatical Japs were willing to fight until the last one died. Once we started and continued obliging them, they sued for unconditional surrender.
Firebombing and nuclear bombing two cities, worked.
Bush, Cheney, Rumsfeld, and the others until present have not found the methods and means, to deal with islam to peace by any means necessary.