I would simply not get stormed by 10 Al Qaida freedom fighters by not going to their country in the first place.
Also, can we just take a moment to appreciate how wildly you're distorting this? He was not killed "storming" someone with 9 other people. There was no physical danger. He was killed by an unmanned drone, by someone probably sitting in an air conditioned room on the other side of the world. And this was in Yemen, a country we weren't even at war with. So when you say, "that's what you do in war," apparently, it's also what you think we should do in peace.
What would you say if Yemen launched a drone strike in the US, claiming that the US was harboring a terrorist? That cool with you? Is that just "what you do in not-war?"
Completely ridiculous. What you're saying right now is exactly what actual authoritarianism looks like.