FILE - Olena Kostevych and Bogdan Nikishin, of Ukraine, carry their country's flag during the opening ceremony in the Olympic Stadium at the 2020 Summer Olympics, on July 23, 2021, in Tokyo, Japan. Ukraine has stepped up efforts to lobby international sports leaders against Russian participation in next year’s Paris Olympics as indications mount that the games could see the biggest boycott since the Cold War. (AP Photo/David J. Phillip, File)

FILE - A Russian flag is held above the Olympic Rings at Adler Arena Skating Center during the Winter Olympics in Sochi, Russia on Feb. 18, 2014. Russia and its ally Belarus have been invited to compete at the Asian Games in the next step to qualify athletes for next year’s Paris Olympics. The arrangement has been brokered by the International Olympic Committee. The IOC indicated on Wednesday that it favours allowing Russians to compete at the 2024 Olympics as neutral athletes. (AP Photo/David J. Phillip, File)

Britain's Prime Minister Rishi Sunak, left, welcomes Ukraine's President Volodymyr Zelenskyy at Downing Street in London, Wednesday, Feb. 8, 2023. It is the first visit to the UK by the Ukraine President since the war began nearly a year ago. (AP Photo/Alberto Pezzali)