force_truce_GHW_defenders_effect

force_truce_GHW_defenders_effect = {
	hidden_effect = {
		#if any defender
			#owns lands in target kingdom
			#is primary in war with another defender who
				#owns land in target kingdom
				#is also a primary
			#then end that war with a white peace
		scope:the_ghw = {
			every_pledged_defender = {
				save_temporary_scope_as = white_peace_attacker
				every_character_war = {
					if = {
						limit = {
							primary_attacker = scope:white_peace_attacker
							primary_defender = {
								save_temporary_scope_as = white_peace_defender
								OR = {
									scope:the_ghw = { has_forced_defender = scope:white_peace_defender }
									AND = {
										scope:target_kingdom = {
											any_de_jure_county_holder = {
												OR = {
													this = scope:white_peace_defender
													any_liege_or_above = { this = scope:white_peace_defender }
												}
											}
										}
										top_liege = {
											save_temporary_scope_as = white_peace_liege
											scope:the_ghw = { has_forced_defender = scope:white_peace_liege }
										}
									}
								}
							}
						}
						end_war = white_peace
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_war_effects.txt.