U.S. makes contingency plans in case Iran nuclear talks fail 3/21/2018 8:38:50 PM The flag of the International Atomic Energy Agency (IAEA) flies in front of IAEAs headquarters during a board of governors meeting in Vienna, Austria June 12, 2017. Reuters- WASHINGTON  -MARCH 21, 2018-   The United States has had constructive talks about the Iran nuclear deal with Britain, France and Germany but is making contingency plans should they fail, the lead U.S. negotiator said on Wednesday. U.S. President Donald Trump gave an ultimatum on Jan. 12 to the European powers saying they must agree to “fix the terrible flaws” of the 2015 Iran nuclear deal or he would refuse to extend the U.S. sanctions relief on Iran that it calls for. U.S. sanctions will resume unless Trump again waives them on May 12. “We have had constructive talks with the Europeans towards a supplemental agreement but I can’t predict whether we will reach an agreement with them or not,...