https://www.reuters.com/article/us-southkorea-japan-laborers/japan-to-tighten-tech-material-exports-to-south-korea-in-wartime-labor-row-idUSKCN1TW144 >Japan will tighten curbs on exports of high-tech materials used in smartphone displays and chips to South Korea amid a growing dispute over South Koreans forced to work for Japanese firms during World War Two, the industry ministry said on Monday, prompting condemnation from Seoul.