Al-Monitor | Barbara Slavin: A majority of Iranians no longer supports the 2015 nuclear deal, thinks their country should withdraw and believes that the United States has done the maximum damage it can inflict on the Iranian economy.

The findings are from a series of new polls of Iranian public opinion conducted by the Center for International and Security Studies at Maryland and IranPoll, a Toronto-based body, which have done numerous similar studies in the past. Interviews of about 1,000 people were conducted by telephone in April, May, late August and early October with a margin of error of plus or minus 3.1 percentage points for each.

While skepticism is always in order when it comes to polls in authoritarian countries, the surveys are interesting for the trend lines they reflect. Most striking is the collapse of support for the Joint Comprehensive Plan of Action (JCPOA), the landmark multilateral agreement reached in 2015 under which Iran accepted curbs on its nuclear program in return for sanctions relief and other economic benefits.

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