The United States may be considering relaxing sanctions on Russian crude oil exports -- imposed over its war against Ukraine -- to soften the impact of the Middle East conflict, a former U.S. special presidential envoy for Ukraine has said.Keith Kellogg, who held the post under U.S. President Donald Trump until December, said in an interview with Kyodo News in Tokyo on Wednesday that Trump is "not doing that because of Russia" but "because of Japan and the rest of the world."Japan depends on the Middle East for over 90 percent of its crude oil imports, making it vulnerable to the effective …READ FULL ARTICLE