You have absolutely no control over your members. If you want to do things right, I recommend checking your alliance war page and immediately removing anyone engaging in offensive wars against any larger alliances.
For the record, Kastor is back to his old tricks once again. Sadly, one fool has already joined his "new alliance."
I feel bad for any idiot that gets caught up in this scam.
Admitting your fault is the first step, but it's only a beginning. At the end of the day, talk is pretty damn cheap. This community ought to watch your actions before they begin to trust you again.
And you definitely should not try leading an alliance for a long time.