U.S. National Security Advisor H.R. McMaster (R) and Treasury Secretary Steven Mnuchin attend a daily briefing to address sanctions on Venezuelan President Nicolas Maduro at the White House in Washington D.C., United States, on July 31, 2017. The United States on Monday slapped sanctions on Venezuelan President Nicolas Maduro after Venezuela held its National Constituent Assembly (ANC) on Sunday. (Xinhua/Ting Shen)
