US has said, it has ordered that Iran, Venezuela and four African nations be added to a list of countries accused of failing to crack down on human trafficking, a step that further isolates them from the United States. <br/><br/>The White House said it also was increasing restrictions on North Korea, Eritrea, Russia and Syria, which already were on the list, by constraining them from engaging in educational or cultural exchange programs with the United States.<br/><br/>In addition, the Trump administration has instructed the Executive Director of the International Monetary Fund and Executive Directors at other multilateral development banks to vote against extending loans or other funds to North Korea, Russia and Iran for fiscal year 2018, which begins today.