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On the other hand, you will occasionally run across rudeness and posturing that is quite gratuitous. The flip-side of the above is that it is acceptable form to slam real offenders quite hard, dissecting their misbehavior with a sharp verbal scalpel. Be very, very sure of your ground before you try this, however. The line between correcting an incivility and starting a pointless flamewar is thin enough that hackers themselves not infrequently blunder across it; if you are a newbie or an outsider, your chances of avoiding such a blunder are low. If you're after information rather than entertainment, it's better to keep your fingers off the keyboard than to risk this.
So both sides of any conflict, not to mention civilians everywhere, are better off if neither of them uses chemical weapons. But that requires believing that your opponent will never use them, no matter what. And the only way to do that, short of removing them from the planet entirely, is for everyone to just agree in advance to never use them and to really mean it. That becomes much harder if the norm is weakened because someone like Assad got away with it. It becomes a bit easier if everyone believes using chemical weapons will cost you a few inbound . cruise missiles.