We are not using their real names for their own safety, and will call them Mavka, Pavlo and Iryna. Russian citizenship is now obligatory if you want to work or study or have an urgent medical help, Pavlo says. Children at nursery school in Crimea are told to sing the Russian anthem every morning, even the very youngest. Russia's occupation authorities treat the Ukrainian language or anything related to Ukraine as extremist, says Mavka. Many are worried documents might get signed that, God forbid, leave us under Russian occupation for even longer.