start_wars_for_seljuk_empire_effect

start_wars_for_seljuk_empire_effect = {
	save_temporary_scope_as = seljuk_conqueror
	# Build a list of potential targets
	every_independent_ruler = {
		limit = {
			any_sub_realm_county = {
				title_province = { geographical_region = world_persian_empire }
			}
		}
		if = {
			limit = { NOT = { is_in_list = top_liege_targets } }
			add_to_temporary_list = top_liege_targets
		}
	}
	ordered_in_list = {
		list = top_liege_targets
		# Find the weakest target
		order_by = {
			value = current_military_strength
			# Inver the list so the weakest is at the top
			multiply = -1
		}
		save_temporary_scope_as = new_war_target
		primary_title = { save_temporary_scope_as = war_target_title }
		# Declare the war
		scope:seljuk_conqueror = {
			start_war = {
				cb = fp3_seljuk_invasion_cb
				target = scope:new_war_target
				target_title = scope:war_target_title
			}
		}
	}
}

As written in game/common/scripted_effects/01_dlc_fp3_scripted_effects.txt.