Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Rouhani Vows 'Crushing Response' if Arms Embargo Extended RFE/RL Iranian President Hassan Rouhani has threatened a "crushing response" if the United States continues efforts to prolong a U.N. Security Council arms embargo on Tehran that is set to expire later this year. A landmark 2015 nuclear deal between Iran and six world powers provided for Tehran to curb its nuclear program in return for the lifting of international sanctions, as well as for a U.N. conventional-weapons embargo due to expire in October. But U.S. President Donald Trump in 2018 withdrew from the agreement signed under his predecessor, Barack Obama, calling it a bad deal, and reimposed harsh sanctions that have crippled Iran's economy. Washington now says it also wants to extend the arms embargo. .