Japan's top tariff negotiator, Ryosei Akazawa, spoke with U.S. Commerce Secretary Howard Lutnick by phone twice on Saturday, an official said, as they try to iron out some of the most difficult issues in pursuit of a deal that will be beneficial to both countries.Akazawa, who has extended his stay in Washington, spoke to Lutnick for about 15 minutes in the morning and about 20 minutes in the evening, the Japanese government said, adding Tokyo will continue to work "strenuously" with Washington toward an agreement.Akazawa's calls with Lutnick came a day after they held a meeting that lasted …READ FULL ARTICLE