We have already lifted restrictions for Syrians as the OFAC (Office of Foreign Assets Control) has a general license for educational content (Syria General License No. 11A) issued. We are working with the State Department and OFAC for licenses or exemptions for the other affected countries and we hope to get the remaining blocks lifted soon.
More info at http://blog.coursera.org/post/74891215298/update-on-course-a...