This book studies the representation of Iran in the New York Times in two period of before and after Barack Obama''s adjuration. The significance of these periods is that, in the first period, the general policy of the United States was based on preemption while in the second period, the general policy of U.S. was based on negotiation with Iran to solve the existing problems. Throughout analyzing forty headlines and twenty full-text news stories, the study shows that there are some differences in the representation of Iran in these periods. In the first periods Iran is introduced as a dangerous powerful enemy, whiles in the second one, the presented image of Iran is partly moderate. The study uses the analytical components of CDA and the grammar of transitivity of SFG to analyze these cases. The conclusion, made by this study asserts that, the change in the policy of government as the most powerful institute of the society has brought about change in the approach of the newspaper toward Iran. Reader-friendly and comprehensible style, along with objective analyses make this book the perfect choice for discourse analysis researchers, newsmakers and linguistic students.