With less than a month to go until Iowans head to caucus on February 3rd, former Vice President Joe Biden is betting big on foreign policy, launching a revamped foreign policy ad with a fresh focus on Iran in the wake of escalating tensions between that country and the United States. The ad, entitled ‘Tested,’ updates a previous version that first hit the airwaves in November with a new focus on Iran, beginning with news reports following the U.S. airstrikes that killed Iranian General Qasem Soleimani.