Peter Bergen: Trump gets amnesia on Iran

The leaders of Iran have reason to be confused about what President Trump's goals are when it comes to their country. Trump pulled the United States out of the Iranian nuclear deal last year and then imposed draconian new sanctions on Iran. In June, Trump ordered military strikes against Iran and then called them off at the last minute. Trump has also said he would sit down with the Iranian leadership without preconditions, but now he appears to have reversed himself.