Japanese Prime Minister Fumio Kishida, centre, offer prayers, at a church in Bucha, a town outside Kyiv that became a symbol of Russian atrocities against civilians, in Ukraine, Tuesday, March 21, 2023. (Ukrainian Foreign Ministry Press Office via AP)

Japanese Prime Minister Fumio Kishida, centre, offers prayers, at a church in Bucha, a town outside Kyiv that became a symbol of Russian atrocities against civilians, in Ukraine, Tuesday, March 21, 2023. (Ukrainian Foreign Ministry Press Office via AP)

Japanese Prime Minister Fumio Kishida, third left, during his visit to Bucha, a town outside Kyiv that became a symbol of Russian atrocities against civilians, in Ukraine, Tuesday, March 21, 2023. (Ukrainian Foreign Ministry Press Office via AP)

In this handout photo taken and released by the Ukrainian Foreign Ministry press service on March 21, 2023, shows Ukraine's Deputy Foreign Affairs Minister of Ukraine Emine Dzhaparova (2nd L) welcoming Japan's Prime Minister Fumio Kishida (2nd R) during his visit in Kyiv, amid Russia's military invasion on Ukraine. - Japan's prime minister arrived in Kyiv on March 21, after the foreign ministry announced he was headed on a surprise trip to Ukraine. (Photo by Handout / Ukrainian Foreign Ministry press-service / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Ukrainian Foreign Ministry press-service" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

In this handout photo taken and released by the Ukrainian Foreign Ministry press service on March 21, 2023, shows Ukraine's Deputy Foreign Affairs Minister of Ukraine Emine Dzhaparova (C) welcoming Japan's Prime Minister Fumio Kishida (2nd R) during his visit in Kyiv, amid Russia's military invasion on Ukraine. - Japan's prime minister arrived in Kyiv on March 21, after the foreign ministry announced he was headed on a surprise trip to Ukraine. (Photo by Handout / Ukrainian Foreign Ministry press-service / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Ukrainian Foreign Ministry press-service" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

Japan's Prime Minister Fumio Kishida (C) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (C) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (C) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (L) visits a photo exhibition showing images of the site of a mass grave found in the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (C) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (C) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (R) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (2nd L) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida (2nd R) visits the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during his visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida pays his respect at the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during a visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida pays his respect at the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during a visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida pays his respect at the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during a visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)

Japan's Prime Minister Fumio Kishida pays his respect at the site of a mass grave found on the grounds of the church of Saint Andrew Pervozvannoho All Saints in the town of Bucha, during a visit to Ukraine on March 21, 2023, amid the Russian invasion of Ukraine. (Photo by Sergei CHUZAVKOV / AFP)