Vladimir Putin has signed a decree to rehabilitate ethnic minorities in Crimea who suffered under Soviet dictator Josef Stalin.
Among the groups the decree concerns is Crimea's large Tatar population, which has largely opposed the peninsula's annexation by Russia.
"I have signed a decree to rehabilitate the Crimean Tatar population, the Armenian population, Germans, Greeks - all those who suffered during Stalin's repressions," Mr Putin told a State Council meeting.
Tensions remain high in eastern Ukraine after at least three died in a day of shooting during what was supposed to be an Easter truce.
In an exclusive interview with NBC News, the Ukrainian Prime Minister warns of the dangers of unchecked Russian expansion and aggression.
Russia, the US and the EU say that all sides have agreed to steps to "de-escalate" the crisis in Ukraine at talks in Geneva.