Between Ukraine and the Republic of Moldova lies the breakaway region known as Transnistria. The region is made up of a majority of ethnic Russians, and many want to be part of Russia. So why not, after Crimea?Between Ukraine and the Republic of Moldova lies the breakaway region known as Transnistria. The region is made up of a majority of ethnic Russians, and many want to be part of Russia. So why not, after Crimea?