KIEV, UKRAINE - MAY 20: Ukraine's President Volodymyr Zelensky (C) walks to his Presidential Office after his inauguration ceremony in the Ukrainian Parliament in Kiev, Ukraine, on May 20, 2019. Vladimir Shtanko / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (2nd R) attends presidential oath-taking ceremony of Volodymyr Zelenskiy (L) at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy is seen during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) holds the Ukrainian symbol of power as he takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Ukrainian President Volodymyr Zelenskiy (C) takes oath during his presidential oath-taking ceremony at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (front row C) attends presidential oath-taking ceremony of Volodymyr Zelenskiy (not seen) at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (front row 4th R) attends presidential oath-taking ceremony of Volodymyr Zelenskiy (not seen) at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (C) shakes hands with Ukrainian President Volodymyr Zelenskiy (L) after the presidential oath-taking ceremony of Zelenskiy at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (R) shakes hands with Ukrainian President Volodymyr Zelenskiy (L) after the presidential oath-taking ceremony of Zelenskiy at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

KIEV, UKRAINE - MAY 20: Turkish Vice President Fuat Oktay (2nd L) shakes hands with officials after the presidential oath-taking ceremony of Volodymyr Zelenskiy (3rd R) at the Ukrainian Parliament in Kiev, Ukraine on May 20, 2019. Arda Kucukkaya / Anadolu Agency/ABACAPRESS.COM

Fighters attend the opening ceremony of four-day world championship of Medieval combat fest (IMCF) in medieval fortress near Kiev on May 18, 2019. - French, British, German, Chinese, Australian and about thirty other teams from all over the world came to Ukraine to demonstrate their skills in full-contact battles with real medieval weapons made on the historical pattern in their hands. (Photo by Sergei SUPINSKY / AFP)

TOPSHOT - A French (C) and British fighters take part in a combat in heavy knight armor battle during the four-day world championship of Medieval combat fest (IMCF) in medieval fortress near Kiev on May 18, 2019. - French, British, German, Chinese, Australian and about thirty other teams from all over the world came to Ukraine to demonstrate their skills in full-contact battles with real medieval weapons made on the historical pattern in their hands. (Photo by Sergei SUPINSKY / AFP)