If they resist, kill them...
I vaguely remember something along the lines of: If a city resisted invasion, Ghengis Khan would have the city destroyed and all the occupants (or was it just the men?) put to death.
There is a leading manager at my place who strongly resembles Ghengis Khan. Suggest a different plan to his vision, no matter how much more sensible, and your career aspirations (and often your aspirations to continued employment) are as good as dead.