I know that there is no system of PK tokens, and there is a clear difference between free and open PK. But I also know there are some things that don't merit PK at all, and I'm wondering about a particular scenario that's been happening more frequently over the past month or two. Player A sneaks into an enemy city, tries to PK someone for a valid reason, and gets attacked by three other players in response. Player A then waits until these other players are by themselves, and attacks them, claiming s/he was attacked first, so it's valid. Does this hold when the other players were just defending their own city to begin with?