US President Donald Trump touts a "crushing economic operation" against Iran, but former US negotiator Alan Eyre tells Al Jazeera the State Department is "inert," allies are aliena

US President Donald Trump touts a "crushing economic operation" against Iran, but former US negotiator Alan Eyre tells Al Jazeera the State Department is "inert," allies are alienated, and Iran's leaders, including the IRGC, are unlikely to capitulate under mounting sanctions.