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US Secretary of the Treasury Steven Mnuchin (R) and Japanase Finance Minister Taro Aso sit prior bilateral talks during the G20 Finance Ministers and Central Bank Governors Meeting in Baden-Baden, southern Germany, on March 17, 2017. Finance ministers from the world's top nations gather in Germany on March 17, as fears grow of a looming trade war over US President Donald Trump's America First policy. / AFP PHOTO / Thomas Kienzle (Photo credit should read THOMAS KIENZLE/AFP/Getty Images)

US Secretary of the Treasury Steven Mnuchin (R) and Japanase Finance Minister Taro Aso sit prior bilateral talks during the G20 Finance Ministers and Central Bank Governors Meeting in Baden-Baden, southern Germany, on March 17, 2017.    
Finance ministers from the world's top nations gather in Germany on March 17, as fears grow of a looming trade war over US President Donald Trump's America First policy. / AFP PHOTO / Thomas Kienzle        (Photo credit should read THOMAS KIENZLE/AFP/Getty Images)