Originally posted by Thruster
Far be it for me to advocate passivity in the case of a person entering another's home uninvited with ill intent, I just don't know how many times it really happens.
So we should sit down with the intruder, have some tea, and discuss what his intentions are?

"Oh, your just here to rob the place then?"
"Yes sir. Sorry about this, I just want your valuables. Don't want to harm you."
"Well, I'll just pop over to the bedroom, and bar the door. Oh, and do be quick, I shall ring the police. I wouldn't want you to get caught."
"If you would sir, mind throwing out your wallet, before you close the bedroom door. It would help me, speed things along, greatly."
As for your "other" scenario Thruster, Hollywood bull**** would not make it past police scrutiny. All shootings get investigated, and both shooter and shoot are looked at. If things don't tally the way they should, and there are a lot of variables that could make investigators think of murder(it is what they usually start out thinking in the first place), rather than some poor bloke picking the wrong house to mess with. Hollywood fantasies are not a part of the real world, except as entertainment on screen. A tiny, fraction of a percent, of home invasions come anywhere near the scenario you provide. For that tiny fraction of a percent, the police usually figure out, rather quickly, that the "victim" really isn't.
If a person enters my house, uninvited, they will be faced with a gun, and told to leave. If they do not, or advance on me, I will assume their intentions are hostile and react to preserve my life and the lives of my family. Even if they don't speak the same language, a gun in the face is a universal sign for GTFO.