Japan is the world's fourth largest economy, meaning it accounts for a large part of global trade and growth. Tokyo imports a great deal of energy and food from overseas and is dependent on exports including electronics, machinery and motor vehicles. The US is its biggest export market.

President Trump’s 15 percent tariff on cars from Japan has angered U.S. automakers, which make cars in Canada and Mexico subject to 25 percent tariffs.

Japan's government said on Friday that profits from a $550 billion investment package agreed in this week's tariff deal with the U.S. would be split between Japan and the U.S. according to the degree of contributions by each side.