When you make a deal you stick to it. Rock-hard rule. You don't renege, you don't sell out. You hold up your end and expect the other party to do the same. If the other party doesn't, you're entitled to deal with every man of it as you see fit in order to set things right. No--you're more than entitled. You're obligated. Or the rule would mean nothing.
James Carlos Blake, The Rules of Wolfe
honor, obligation, rules