David Hartsough is a Quaker from San Francisco, author of Waging Peace: Global Adventures of a Lifelong Activist, director of Peaceworkers, and co-founder of World Beyond War and Nonviolent Peaceforce.

For more info on the trip, see Code Pink's "Blogs from Iran." For more info on the effect of U.S. sanctions on Iran, see World Beyond War's "Iranian Sanctions: Iraq Redux?" and "Fear, Hate and Violence: The Human Cost of US Sanctions on Iran."