In order to cross the Ukraine-Russian border, an internal passport of a citizen of Ukraine, a diplomatic passport, a service passport, a travel document of the child are necessary. In this case, there will be enough internal Ukrainian passport. Plus, if you are under 18 years of age, you need a travel document for the child. A visa for staying on the territory of Russia for 90 days during each half-year is not required.

However, Ukrainian citizens should remember that from the beginning of 2015 for them entry into the territory of the Russian Federation is provided only for foreign passports valid for at least 6 months after leaving Russia