Shell, rocket and machinegun the entire settlement anyway?
Wait a minute, didn't those Russians do a similar thing to Grozny a few years ago and get similar condemnation?
If you
really want to get those [rebels | freedom fighters | terrorists] there are two most commonly used ways these days :
1. Like Israelis did it. Yes, it is somewhat close to Grozny, Berlin ('45),...
2. Send B52s (if it doesn't work send in your troops)
True, so far there are no examples of tactics #2 in populated areas/cities. It worked in Yugoslavia but mostly because other side decided not to fight.