Japanese Prime Minister Fumio Kishida is on a surprise visit to Ukraine, hours after Chinese President Xi Jinping arrived in neighbouring Russia for a three-day visit.
Mr Kishida will meet President Volodymyr Zelensky in the Ukrainian capital as the Far East rivals hold competing diplomatic offensives.
He will “show respect to the courage and patience of the Ukrainian people who are standing up to defend their homeland under President Zelensky’s leadership, and show solidarity and unwavering support for Ukraine as head of Japan and chairman of the G7”, the Japanese Foreign Ministry said.
At the talks in Kyiv, Mr Kishida will show his “absolute rejection of Russia’s one-sided change to the status quo by invasion and force, and to affirm his commitment to defend the rules-based international order”, the ministry’s statement added.
Russian President Vladimir Putin had earlier warmly welcomed Mr Xi to the Kremlin on a visit both nations described as an opportunity to deepen their “no-limits friendship”.
At a meeting with Russian Prime Minister Mikhail Mishustin on Tuesday, Mr Xi said he had invited Mr Putin to visit China at some point this year.
Moscow and Beijing have both weathered international condemnation of their human rights record.
The Chinese government has been widely condemned for alleged atrocities against Uighur Muslims in its far western Xinjiang region. The allegations include genocide, forced sterilisation and the mass detention of nearly a million Uighurs. Beijing has denied the allegations.
Footage shown on Japanese national broadcaster NHK showed Mr Kishida walking on the platform of a railway station, escorted by a few people who appeared to be Ukrainian officials. It came hours after he met Indian Prime Minister Narendra Modi in New Delhi and the week after a breakthrough summit with South Korean President Yoon Suk Yoel.
In New Delhi, Mr Kishida called for developing and global south countries to raise their voices to defend the rules-based international order and help stop Russia’s war.
Tokyo, which has territorial disputes over islands with China and Russia, is particularly concerned about the close relationship between Beijing and Moscow, which have conducted joint military exercises near Japan’s coasts.
Mr Kishida, who is to chair the G7 summit in May, was the only leader of the group who had not visited Ukraine and was under pressure to do so at home.
US President Joe Biden took a similar route to visit Kyiv last month, just before the first anniversary of Russia’s invasion of Ukraine.
Due to the limitations of Japan’s pacifist constitution, Mr Kishida’s trip was arranged secretly. He is Japan’s first post-war leader to enter a war zone.
Mr Kishida, invited by Mr Zelensky in January to visit Kyiv, was asked before his trip to India about a rumour of his possible trip at the end of March, but denied it and said nothing concrete had been decided.
Japan has joined the US and European nations in sanctioning Russia over its invasion and providing humanitarian and economic support for Ukraine.
Tokyo was quick to react because it fears the possible impact of a war in east Asia, where China’s military has grown increasingly assertive and has escalated tensions around self-ruled Taiwan, which Beijing claims as its territory.
Mr Kishida is expected to offer continuing support for Ukraine when he meets Mr Zelensky.
Television footage on NTV showed him getting on a train from the Polish station of Przemysl near the border with Ukraine, with a number of officials.
Due to its pacifist principles, Japan’s support for Ukraine has also been limited to non-combative military equipment such as helmets, bulletproof vests and drones, and humanitarian supplies including generators.
Japan has contributed over £5.7 billion to Ukraine, and accepted more than 2,000 displaced Ukrainians and helped them with housing assistance and support for jobs and education, a rare move in a country known for its strict immigration policy.