By Jeff Mason, Bart H. Meijer and David Brunnstrom WASHINGTON/BRUSSELS (Reuters) -U.S. President Donald Trump opened a new phase on Monday in the trade war he launched this year, telling partners, from powerhouse suppliers such as Japan and South Korea to minor players,

President Trump on Monday said the U.S will impose 25% tariffs on goods from South Korea and Japan by August 1, while also threatening to hit five other nations with import duties of up to 40% by next month.