Terrorism and war on terror are the parts of discussion in international relations that cannot be overlooked. The centre of this discourse is the USA and roughly some countries of Middle East. Here the main question is why USA is so concerned to establish its ascendancy over the Muslim countries at the name of war on terror, at the same time, why the Islamist fundamentalists being an uneven power possessor are interested to contradict with USA. The reason is forever the same. USA tries to restrain its global hegemony whereas the radical Islamist fundamentalists endeavor to regain power and influence of previous Islamic Empire of Glory and superiority.