Sanctions, whether unilateral or multilateral, have been the United States’ core policy on Iran since the 1979 revolution. President Barack Obama entered office confirming that he intended to pursue a policy of engagement with Tehran. During his tenure, however, the United States has orchestrated its harshest sanctions to date against Iran.
“Twelve Major Consequences of Sanctions on Iran,” Hossein Mousavian, Al-Monitor, May 3, 2013.