The leaders of the Group of Seven industrialized nations agreed Sunday to take "every possible measure" to tackle global economic downside risks, a Japanese senior government official said, with an escalating U.S.-China trade dispute rattling financial markets.This year's G-7 summit started with talks on diplomatic and security issues over dinner on Saturday, as the United States and other members have been at odds over the Iran nuclear deal and Russia's potential return to the group's framework.On the second day of their annual gathering in the French resort town of Biarritz, many G-7 lead…READ FULL ARTICLE