Donald Trump arrives in South Korea on Wednesday for the final leg of an Asian tour that has seen him agree deals on trade and minerals with a succession of states in the region. But his demand for an upfront investment of $350 billion (€300 billion) in the United States in return for a reduction in tariffs on South Korea goods is proving too much for president Lee Jae-myung. Trump and Lee will meet on Wednesday ahead of an Asian Pacific Economic Cooperation (APEC) summit in the southeastern coastal city of Gyeongju. But economists have warned that agreeing to Trump’s terms could destabilise the South Korean economy. “I put it out over the internet that I’m coming to South Korea and if he would like to meet, I’m open to it,” he said.