This was a direct response to claims that the U.S. blocked Iranian journalists from coming to the U.S.  Koppel, whose groundbreaking coverage of the Iran hostage crisis morphed into ABC's "Nightline" in 1980, traveled throughout Iran for three weeks for the two-hour special.
Koppel, known for his coverage of the Iran hostage crisis, conducted extensive research in Iran over three weeks before producing a two-hour special. This was in response to claims that the U.S. had barred Iranian journalists from entering the country.