White flag a diplomat can hold. If a person is unarmed, holding a white flag OUTSIDE their castle (to avoid if someone doesnt want to be killed in a siege), and goes to an enemy to talk to them, they cant kill the person. They are simply there to talk about peace or operations to do. The enemy cant kill them unless they have proof the diplomat had a weapon. It would increase RP so you do not have to do peace talks over global, teamspeak or steam. Also it would have respect for diplomats, a well respected people in this time (regardless of what 300 says)