Japan-Korea spat roils supply chains, prompting questions about U.S.' role

While an escalating trade fight between Japan and South Korea is already affecting U.S. supply chains, the Trump administration has yet to show definitively whether it plans to intervene -- though industry officials and analysts say they would like to see the U.S. do so. The U.S. has historically and economically strong relationships with both countries, including a recently renegotiated trade deal with South Korea and trade talks that could produce a limited deal with Japan in short order. President...