Japan is considering relaxing rules for exporting defense equipment in an effort to prop up the domestic defense industry, government sources said Friday. Details of the planned revision will be included in a basic policy for economic and fiscal management to be finalized by the government in June, the sources said. But the easing of export controls is expected to raise concerns that Japanese-made weapons may be used in conflicts overseas. The National Security Strategy, the country’s long-term security and diplomatic policy guidelines, will also mention strengthening support for the defense i…