By Tim Kelly TOKYO (Reuters) -Japanese Prime Minister Shigeru Ishiba heads to Canada on Sunday for trade talks with U.S. President Donald Trump, hoping to persuade him to drop trade tariffs that have imperilled Japan's auto companies and threaten to undermine his fragile government.

President Trump and British Prime Minister Keir Starmer signed a trade deal that they had agreed to last month at the G7 summit in Canada. Trump said the US's relationship with Britain was "just fantastic,

Japanese Prime Minister Shigeru Ishiba and U.S. President Donald Trump made little headway in bridging gaps over tariffs at