People hold placards with portraits of Ukrainian citizens jailed in Crimea and Russia during their action "Mr. President, talk to us" outside the office of President Volodymyr Zelensky in Kiev on May 21, 2020. - Relatives of the prisoners demand that president Zelensky should implement his promise to exchange the prisoners "one-on-one" and return them back to Ukraine. (Photo by Sergei SUPINSKY / AFP)