DUBAI, Aug 20 (Reuters) - A threat by U.S. President Donald Trump to impose unprecedented economic warfare and isolation on Iran could have implications for countries that trade with it. Trump warned of economic consequences for any country that supports Iran.Here are some of Iran's main trading partners in recent years:CHINAChina, the biggest buyer of Iranian oil, could face additional pressures from the U.S. over its purchases if Trump follows through on his promise.

US president announces 'causing economic operation' against Iran, vows measures against nations trading with Tehran.

Jump to contentAllNewsSportCultureLifestylePresident Donald Trump declared an “Economic D-Day” against Iran, threatening severe financial consequences for any nation offering a…