[RWK]

I realize laws concerning legal force application are largely state-dependant. However, I have long wondered what defensive rights pertain in the following scenario.

In Virginia -- and most other jurisdictions -- the statues permit the use of lethal force to protect innocents from severe and direct danger. But what happens once the "instantaneous danger" subsides? For example, a knife-armed felon attempts to rob you in a parking lot. However, once you draw a handgun he throws his knife down and starts to calmly walk away.

Now, it seems logical to presume that the moment he is disarmed he no longer poses an IMMEDIATE and grave threat. Therefore, can one apply lethal force to hold this criminal until the police apply, or are we legally compelled to simply allow him to flee the scene?

Thanks for your opinions and facts.