assassinate …!

As if to punish us for not only warring with the Stagnant Ascendancy of the … but for then accepting defeat, … agents appeared by …'s side after the peace negotiations concluded. They dispatched our … with unseen weaponry and practiced brutality before melting away as if they were never there.

The command below will trigger the "assassinate …!" event in Stellaris:

When this event fires, you can choose between the following option:

• We are defeated and humiliated, but will rise again.
  • … dies.

Conditions the game checks before this event can fire:

• Must not have ethic: Gestalt Consciousness

from = {
  is_country_type = fallen_empire
  is_machine_empire = no
}
NOT = { has_ethic = ethic_gestalt_consciousness }
exists = ruler