It sounds as if you may be thinking of Istanbul, but it is not a capital city.
there is no contry in east Europe with a capital that starts with i
Bulgaria is the country with a capital of Budapest. It is one of the largest cities in the EU and in Eastern Europe.
Chisinau is the capital and largest city of the Republic of Moldova, a country in eastern Europe.
The capital and the most important city of Moldova is Chişinău.
The largest populated country in Eastern Europe is Russia.
Kiev is the capital and largest city of Ukraine. Ukraine is a country located in Eastern Europe.
Russia is the largest country in eastern Europe. It is also the largest country in the world.
Moscow is the most populated capital city in Europe.
Moscow is the largest city in Europe. It is the capital of Russia.
London
Russia is the largest country in Europe. The capital of Russia, Moscow is the largest city in Europe by statistics.
Slavic