Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

Environmental activists take part in a rally demanding actions to avert climate change in central Kyiv, Ukraine September 26, 2021. REUTERS/Valentyn Ogirenko

An employee supervises the cast iron smelting process at Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

A ladle with molten cast iron is pictured at Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

Employees supervise the steel smelting process at Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

A general view shows Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

An employee walks at Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

Employees work at a rolling shop of Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

An employee works at Yenakiieve Iron and Steel Works (EMZ) in the rebel-controlled town of Yenakiieve in Donetsk Region, Ukraine September 24, 2021. REUTERS/Alexander Ermochenko

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

A serviceman attends the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

A Ukrainian serviceman with a national flag gestures as he attends the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

A serviceman attends the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Servicemen attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

A serviceman attends the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 24, 2021. REUTERS/Gleb Garanich

Reservists of the self-proclaimed Luhansk People's Republic army take part in exercises at the training ground outside the rebel-controlled city of Luhansk, Ukraine September 23, 2021. REUTERS/Alexander Ermochenko

Reservists of the self-proclaimed Luhansk People's Republic army take part in exercises at the training ground outside the rebel-controlled city of Luhansk, Ukraine September 23, 2021. REUTERS/Alexander Ermochenko

Opposition lawmakers argue with the first deputy parliament speaker Ruslan Stefanchuk during a parliament session to vote for a law that order "oligarchs" to register and stay out of politics, in Kyiv, Ukraine September 23, 2021. REUTERS/Ruslan Kaniuka

Demonstrators shout slogans during a rally of entrepreneurs and representatives of small businesses against plans to approve changes to the tax code, in front of the parliament building in Kyiv, Ukraine September 23, 2021. REUTERS/Valentyn Ogirenko

Presidential aide Serhiy Shefir walks after the inauguration of Ukraine's President Volodymyr Zelenskiy in Kyiv, Ukraine May 20, 2019. Picture taken May 20, 2019. REUTERS/Valentyn Ogirenko

Investigators examine bullet holes in a car of Serhiy Shefir, Ukrainian President Volodymyr Zelenskiy's principal aide, following an assault outside the capital Kyiv, Ukraine September 22, 2021. REUTERS/Sergiy Karazy

Markers are attached next to bullet holes in a car of Serhiy Shefir, Ukrainian President Volodymyr Zelenskiy's principal aide, following an assault outside the capital Kyiv, Ukraine September 22, 2021. REUTERS/Serhii Nuzhnenko

An investigator examines bullet holes in a car of Serhiy Shefir, Ukrainian President Volodymyr Zelenskiy's principal aide, following an assault outside the capital Kyiv, Ukraine September 22, 2021. REUTERS/Serhii Nuzhnenko

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

Servicemen of the U.S. and Ukrainian armies attend the opening ceremony of the "RAPID TRIDENT-2021" military exercise at Ukraine's International Peacekeeping Security Centre near Yavoriv in the Lviv region, Ukraine September 20, 2021. REUTERS/Gleb Garanich

A woman presents Russian flags to passengers, who depart for a polling station in Russia's Rostov Region to vote in the Russian parliamentary election, in the rebel-controlled town of Makeyevka (Makiivka) outside Donetsk, Ukraine, September 19, 2021. REUTERS/Alexander Ermochenko

People board a train before departing for a polling station in Russia's Rostov Region to vote in the Russian parliamentary election, in the rebel-controlled town of Makeyevka (Makiivka) outside Donetsk, Ukraine, September 19, 2021. The sign on a carriage reads: "Our choice is Russia!" REUTERS/Alexander Ermochenko

Local residents vote in the Russian parliamentary election via an online system in the rebel-held city of Donetsk, Ukraine, September 19, 2021. REUTERS/Alexander Ermochenko

Local residents vote in the Russian parliamentary election via an online system in the rebel-held city of Donetsk, Ukraine, September 19, 2021. REUTERS/Alexander Ermochenko

Participants take part in the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko TPX IMAGES OF THE DAY

Participants take part in the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants take part in the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants take part in the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants attend the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants attend the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants attend the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants attend the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko

Participants attend the Equality March, organized by the LGBT+ community in Kyiv, Ukraine September 19, 2021. REUTERS/Valentyn Ogirenko