A newly elected Ukrainian Minister for Foreign Affairs Vadym Prystayko speaks during parliament session in Kyiv, Ukraine, Thursday, Aug. 29, 2019. Parliament in Ukraine has opened for its first session since an election last month. (AP Photo/Efrem Lukatsky)

A newly elected Ukrainian Defense Minister Andriy Zahorodnyuk speaks during parliament session in Kyiv, Ukraine, Thursday, Aug. 29, 2019. Parliament in Ukraine has opened for its first session since an election last month. (AP Photo/Efrem Lukatsky)

Ukraine's new Foreign Minister Volodymyr Prystayko gestures during the first session of the new parliament, in Kiev, on August 29, 2019. - Ukraine's parliament on August 29, 2019 approved President Volodymyr Zelensky's candidate for prime minister -- a 35-year-old lawyer who works for his administration called Oleksiy Goncharuk. (Photo by SERGEI SUPINSKY / AFP)

Ukraine's new Foreign Minister Volodymyr Prystayko gestures during the first session of the new parliament, in Kiev, on August 29, 2019. - Ukraine's parliament on August 29, 2019 approved President Volodymyr Zelensky's candidate for prime minister -- a 35-year-old lawyer who works for his administration called Oleksiy Goncharuk. (Photo by SERGEI SUPINSKY / AFP)

Ukraine's new Defence Minister Andriy Zagorodniuk gestures during the first session of the new parliament, in Kiev, on August 29, 2019. - Ukraine's parliament on August 29, 2019 approved President Volodymyr Zelensky's candidate for prime minister -- a 35-year-old lawyer who works for his administration called Oleksiy Goncharuk. (Photo by SERGEI SUPINSKY / AFP)

Ukraine's new Defence Minister Andriy Zagorodniuk applauds during the first session of the new parliament, in Kiev, on August 29, 2019. - Ukraine's parliament on August 29, 2019 approved President Volodymyr Zelensky's candidate for prime minister -- a 35-year-old lawyer who works for his administration called Oleksiy Goncharuk. (Photo by SERGEI SUPINSKY / AFP)

Ukraine's new Defence Minister Andriy Zagorodniuk applauds during the first session of the new parliament, in Kiev, on August 29, 2019. - Ukraine's parliament on August 29, 2019 approved President Volodymyr Zelensky's candidate for prime minister -- a 35-year-old lawyer who works for his administration called Oleksiy Goncharuk. (Photo by SERGEI SUPINSKY / AFP)