Quote Originally Posted by Kavhan Isbul
Every time I do this only two really try to assassinate, and the rest get slaughtered by the border fort.
Never send valour 0 - 4 assassins or spies through a border forted province, they will simply die before they reach the target. Even with a Valour 5 Assassin or spy I would send them in, pray, and if they do pull it off, get them straight out of there the next turn. Every turn they're in there the border fort and other counterspying agents have a go at catching them.