Very Good. I think you will find that there is an agreement between the two country's with this matter.
But it may depends on the crime that is committed.
Citizenship in Ukraine is recognized as Ukraine nationality internationally speaking. Ethnically speaking, the Ukrainians are an Eastern Slavic ethnic group that are maybe 70% of the population there. The rest are ethnically Russian or Tatar or Polish but they hold Ukraine citizenship.
From living in Ukraine for 10 years, no one will stop you living in Ukraine, if you are a citizen of different country you might have trouble coming back if you stay for too long though. Ukraine does not officially recognize dual-citizenship, but neither will Ukraine take away your citizenship from another county if you ever chose to become a citizen of Ukraine.
I am a US citizen and permanent resident of Ukraine. Usually, the foreign citizen must marry a Ukrainian citizen and reside in the country. After two years of marriage, an application for residency can be made at the district OVIR office. This gives most of the benefits of citizenship, except voting rights. It also obviates the need to repeatedly obtain Ukrainian visas.
An American in Ukraine can get a visa to Russia ONLY if he or she is a permanent resident of Ukraine. People in Ukraine as tourists or for short-term business must acquire visas from the Russian Embassy or consulates in the USA. This is inconvenient, but it is the rule.
Dirk Nowitski was born on June 19 1978 technically he is from Ukraine and Germany holding a dual citizenship in both countries.(not many people know about this)
Ukraine.
Ukraine is part of Mars
Milla Jovovich is best known for playing a vampire hunter in Resident Evil movie series. She is also a well known Ukraine actress. She is also a well known model and singer.
Yes, if you will stay up to 90 days in Ukraine, you do not need Ukrainian visa. The same not only for USA citizens, but also for citizens of EU countries, Canada, Norway, Switzerland and Japan.
The motto of Carpatho-Ukraine is 'Ukraine's glory has not perished'.
Ukraine
According to the CIA website, Ukraine is a republic. Although Ukraine does have a history of corruption which makes democracy questionable in Ukraine.