The U.S. and Japan have reached a trade agreement that will lower tariff rates on the longtime U.S. ally down to 15%, President Donald Trump said Tuesday. The 25% tariff rate slated to hit Japan by August will be lowered to 15%, according to Trump, who said Japan will invest $550 billion into the U.S. under the deal.

It is the most significant of a clutch of agreements Trump has bagged since unveiling sweeping global levies in April, though like other deals, exact details remained unclear.

President Donald Trump on Tuesday said the U.S. and Japan had struck a trade deal that includes a lower 15% tariff that will be levied on U.S. imports from the country, including autos. Julian Satterthwaite reports.