International relationsSoftBank CEO's financing search for massive projects led him to tariff talksHoward Lutnick, left, and Masayoshi Son stand with then-President-elect Donald Trump in December as he delivers remarks at Mar-a-Lago in Florida. © ReutersAugust 27, 2025 21:30 JSTLONDON -- The trade agreement struck between Tokyo and Washington had hinged on a $550 billion "investment vehicle" in which Japan is to invest in projects in the U.S. This framework is tied to a person who, until now, ha...