Since 1992, there have been five nations remaining governed officially by communist ideologies. Four of these follow different forms of Marxism-Leninism - Vietnam, China, Cuba and Laos. The fifth, North Korea, now officially follows Juche, which claims to be a better version of Marxism-Leninism. North Korea called itself Marxist-Leninist before 1991. Many other nations abandoned Marxism around that time because most people thought it had failed. In many cases Marxist governments fell to authoritarianism, mass poverty, economic collapse and violent conflict, as is the case of the Soviet Union and Yugoslavia, for example.