Here is some code that will force an AI player to declare war on everyone they meet:
 Code:
  set plr_count := Sys_Get_Number_Of_Players()
  for plr_index := 1 to plr_count do
    
    if (plr_index <> sys_long_Player_ID) and (Sys_Empire_Politics_Is_Player_Known(sys_long_Play  er_ID, plr_index)) and (Sys_Empire_Politics_Get_Status_With_Player(sys_lo  ng_Player_ID, plr_index) <> POLITICAL_STATUS_TYPE_WAR) then
	set new_msg_type := 0
	set new_log_id := Sys_Empire_Politics_Create_Temporary_Message(sys_l  ong_Player_ID)
	call Sys_Empire_Politics_Set_Message_To_Empire(new_log_  id, plr_index)
  	set new_msg_type := POLITICS_MSG_DECLARE_WAR
	call Sys_Empire_Politics_Set_Message_Type(new_log_id, new_msg_type)
        call Sys_Empire_Politics_Set_Message_Text(new_log_id, "War!")
        call Sys_Empire_Politics_Send_Message(new_log_id)
   endif
  endfor