At his first summit with U.S. President Donald Trump on Friday, Japanese Prime Minister Shigeru Ishiba obtained reassurance regarding the close security ally's commitment but also received an indirect request for increased defense spending.
But those friendships may be tested as Trump's early fight with China over synthetic opioids and warnings of tariffs against other countries - Japan included - threaten to disrupt commercial relations in Asia and beyond.
Tokyo has so far escaped the trade war Trump unleashed in his first weeks in office.
Trump’s meeting with Japan’s prime minister ended with a tariff warning, but praise from the Japanese side eased tensions.