Singapore is not part of China; used to be part of UK.
No, it isn't a communist country.
No, Chad is not a communist country.
London is not a country. It is a city. It is in England, which is not a communist country.
No, Iceland is not a communist country.
Yugoslavia is no longer a country. Before its breakup it was a Communist country.
China is a communist country.
Thailand is not a Communist Country
No, Brunei is not a communist country.
No, it isn't a communist country.
North is not a country. If you are referring to North Korea, then yes, North Korea is a communist country.
Cuba is the only communist country in the western Hemisphere.
Cambodia is not a communist country. It is a kingdom and democratically governed.