Playing as king of Denmark my wife was killed by a baron in a plot. I could not punish him, well I probably could imprison him, but that would serve no purpose, given that there is no way to execute or banish people without hurting vassal relations.
My son was murdered by a vassal bishop and his duchy inherited by his daughter. The bishop lived a long and happy live, probably bragging about his murder in his sermons.
Let us imprison and execute at least those who murdered our close kin. And while we're at it, let us also demand that other rulers hand over those responsible for the murder of close relatives (diplomatic action) if they are their subjects and if they refuse let us start a war (that would result in the murderer becoming our prisoner if successful).
My son was murdered by a vassal bishop and his duchy inherited by his daughter. The bishop lived a long and happy live, probably bragging about his murder in his sermons.
Let us imprison and execute at least those who murdered our close kin. And while we're at it, let us also demand that other rulers hand over those responsible for the murder of close relatives (diplomatic action) if they are their subjects and if they refuse let us start a war (that would result in the murderer becoming our prisoner if successful).