Marco Rubio takes on press secretary role — and gives Iran one choice to avoid total economic collapse

U.S. Secretary of State Marco Rubio issued a stern warning to Iran while substituting as the White House press secretary on Tuesday.Rubio took on a briefing room full of reporters after Karoline Leavitt took time off from her role as press secretary in order to spend time at home with a newborn child, her second.'They really shouldn't test the will of the United States, at least not under President Donald Trump. ... If they test him, ultimately, they will lose.' Rubio issued a warning to Iran th...