Ukraine, sometimes called the Ukraine, is a sovereign state in Eastern Europe, bordered by Russia to the east and northeast; Belarus to the northwest; Poland, Hungary, and Slovakia to the west; Romania and Moldova to the southwest; and the Black Sea and Sea of Azov to the south and southeast, respectively. Including Crimea, Ukraine has an area of 603,628 km², making it the largest country entirely within Europe and the 46th largest country in the world. Excluding Crimea, Ukraine has a population of about 42.5 million, making it the 32nd most populous country in the world.
Ukraine is a unitary republic under a semi-presidential system with separate powers: legislative, executive and judicial branches. Its capital and largest city is Kiev. Taking into account reserves and paramilitary personnel, Ukraine maintains the second-largest military in Europe after that of Russia. The country is home to 42.5 million people (excluding Crimea), 77.8 percent of whom are Ukrainians "by ethnicity", followed by a sizeable minority of Russians (17.3 percent) as well as Georgians, Romanians/Moldovans, Belarusians, Crimean Tatars, Bulgarians and Hungarians. Ukrainian is the official language and its alphabet is Cyrillic.
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