Visa requirements for Ukrainian citizens
For traveling to certain countries, Ukrainians do not need to use a passport, as they may use their Ukrainian identity card or internal passport.
Documents which give the right to leave Ukraine and to enter Ukraine and certify the identity of a citizen of Ukraine while staying abroad are:It's important to know, that the special rules of arriving in a particular country should be studied carefully. Thus, in most countries that do not require visas or issue visas, upon arrival you must have a passport, which is valid for at least 3 months from of arrival to this country.
Russia–Ukraine border
Since 30 November 2018 Ukraine bans all Russian men between 16 and 60 from entering the country with exceptions for humanitarian purposes.Ukraine upholds entry restrictions for Russian men aged 16-60 years, Ukrinform (December 27, 2018)