Three of eight parties granted waivers by the United States to import oil from Iran have now completely halted imports, a senior State Department official said Tuesday.The official did not identify the three. But Japan was one of seven countries and one territory that won temporary exemptions from the U.S. ban on Iranian oil imports when Washington reimposed sanctions against Tehran in November.The seven other parties are China, India, South Korea, Italy, Greece, Taiwan and Turkey.Including the three, the number of parties that once were purchasers of Iranian oil but have cut imports to zer…READ FULL ARTICLE