It's not reall is it? because if killing others in self-defence or revenge is lowering yourself to their level; then things such as the second world war would have been over within a year. With your point of view you'd be wanting countries to roll over and play dead when they're attacked. I'm sure many people share my view that our country has every right to do as they please to those responsible for today's murders, and you have no right to deny this. The people who launched these attacks today do not deserve the life they have been given.