This paper analyzes the importance and challenges of the global media in today's public diplomacy. As global media has increasingly proved its effectiveness in recent decade, governments of different nations have competitively involved in a war of public diplomacy through media to promote the image of their countries and set a ground for foreigners to understand their positions in the international arena. The dependence of policymakers, on live news coverage provided by different media Institutions such as CNN and other outlets for their own benefit is the order of the day. The challenge of our era is to recognizes that we can help achieve our foreign policy goals through engagement with foreign public and that our success depends on cooperation. This phenomenon can be viewed in both positive and negative ways.