The Japanese are feeling ‘sad and betrayed’ at the US president’s treatment of a long-term ally, an observer says.

Negotiations have stalled ahead of next week’s deadline, with some suggesting Japan misjudged the depth of President Trump’s frustration over Tokyo’s policies.

Japan was set to dispatch its chief tariff negotiator to the United States for an eighth round of ministerial-level talks but called it off after being forced into a waiting game by the White House.