Zagros Travel ( on Steves' recommended Iran list Fall 2015) just this week (18 May 2016) informed us after 6 months of having signed up with them for an Iran October 2016 trip that they will not take us. Harry McQuillan no longer taking US citizens into Iran. Says the rules have recently changed regarding US citizens and now it is too restrictive for US citizens for them to deal with us. Would have been nice if we had known much sooner
Whatever your recommendations, remove Zagros for US citizens and review their interest in continuing to do tours for others.
Needless to say we are upset to have depended on them and to have lost our fall window for an Iran tour. Too late to make other arrangements. Otherwise interactions with Zagros were fine, even helpful.