1 February 2011 was the last day in the post-Soviet era when a passport of USSR was valid for crossing the Russian-Abkhaz border. According to the staff of Abkhazia's passport and visa service, there were about two to three thousand mostly elderly people left with Soviet passports who had no chance of acquiring new documents. These people were not able to get Russian citizenship. But they can first get an internal Abkhaz passport and then a travelling passport to visit Russia.