MP etiquette for war...

[Bwaha]

If you have a non-aggression treaty active you have to give notice...

Ie, most common is a nap-3...

This means you (have) to give a three turn notice before attacking...

Other than that, all is fair in love and war...

[TigerBlood]

Originally Posted by Bwaha

If you have a non-aggression treaty active you have to give notice...

You don't have to give notice. While I try and keep deals in games, some players have no problems breaking deals. Relying on another player to honour a deal is something you should think carefully about. Relying exclusively on diplomacy for defence against another nation is not a situation you should place yourself in.

I have had to learn this the hard way. Even so, you should assume other players are trustworthy until they prove otherwise.