Is it Ethical to Trade with a Totalitarian Iran?

Newsweek

This OPED explores the effect that lifting Iran’s nuclear sanctions will have on big western countries split between ethical economic decisions. It also examines the effect the lifting of the sanctions will have on smaller minorities in Iran like the Baha’is.

Link to article: 
http://www.newsweek.com/ethical-trade-totalitarian-iran-bahai-447440