How many communist nations are in the United Nations?

The answer to how many communist nations are members of the United Nations depends on how you define communist. The People's Republic of China is governed by the Chinese Communist Party, and no other political parties are allowed, but their economy is very much market based since the 1980's, so whether China counts as a communist country is debatable. North Korea is probably the firmest bet for a communist country, they certainly declare their aims as socialist, and private enterprise is very much frowned upon. Saying that, their system is officially "juche", which translates as "self-reliance", not communism. Burma, or Myanmar also once described itself as "The Socialist Republic of....", and still has a closed economy, [though that is changing], but in truth Burma is just a military Dictatorship, and quite possibly a narco-state. Vietnam and Laos are both ruled by the Communist Party, but like China have capitalist economies, so depending on how you want to count it, the answer is either five, one [North Korea], or none.