While many countries are stable because they are open (the United States, France, Japan), others are stable because they are closed (North Korea, Cuba, Iraq under Saddam Hussein).
Meski banyak negara stabil karena sistemnya terbuka (Amerika Serikat, Prancis, Jepang), negara-negara lain justru stabil karena sistemnya tertutup (Korea Utara, Kuba, Irak era Saddam Hussein).