This study is an attempt to explain how some renowned scholars and experts perceive the role of the United States in the international arena, particularly in the Bush era. In the briefest possible way, it reviews their arguments and views on the worldwide impacts of the US foreign policies on globalization ,the international relations , international law , the relationship between the United States and Europe and, the relationship between Islam and the West , and what is commonly known as the phenomenon of Islamo-phobia Its aim is to give a definite answer for the frequently asked question: Why do they hate us ? Hopefully, this book will help the Americans - led by their new president Obama - to choose the right path for the sake of United States itself as well as the whole humanity.