Actually, there's no nickname. 'Moscow' is pretty short, no need to create a separate word, like with St. Petersburg which we simply call "Peter"
Nick Kulyohin was born on November 7, 1983, in Moscow, Russia, USSR.
Moscow.
Moscow is a capital, Russia is the Country.
Kremlin is the name of Russia's capital building.
Moscow is in Russia. It is the capital of Russia.
Nick Afanasiev was born on July 29, 1989, in Moscow, Russian SFSR, USSR [now Russia].
Moscow is in Russia.
The capital of Russia is Moscow.
Proper. It is a name of a city in Russia.
Moscow
Moscow is the capital city of Russia.
Moscow is the capital city of Russia. It does not have a capital.Moscow is a city and not a country. Moscow is the capital of Russia.