Ukrainian President Volodymyr Zelensky (2ndR) and Britain's Prime Minister Keir Starmer (2ndL) sign a 100-year agreement that pledges strengthening defence ties between the two countries following their meeting in Kyiv, on January 16, 2025, amid the Russian invasion of Ukraine. Britain and Ukraine's leaders on January 16, 2025, signed a "landmark" 100-year agreement that pledges strengthening defence ties between the two countries during a visit to Kyiv by Britain's Prime Minister. (Photo by Roman PILIPEY / AFP)