The purpose of this essay is to examine the relationship between globalization and modern terrorism phenomena that forced the US foreign policy of counterterrorism to shift towards the US-led coalition of the "global war on terror"strategy. The research presumed that recent globalized-technologies had facilitated the emergence of radical transnational non-state actors in the international arena who increased the level of global terror and violence and compelled the change of international security and foreign policies due to enormous global security threats it poses. However, the Bush Administration announced the new strategical plan after the September 11th attacks-that caused significant global economic, political, and social impacts-to defeat illegitimate transnational groups and organizations such asthe Al-Qaeda who exploited globalization`s technological instruments of communication, transportation, and information to perpetrate terrorist attacks, spread violence, and influence followers across the world. Therefore, the qualitative research methods have identified and examined the hypothesis` variables to confirm the direct relationship between the phenomenon and its subsequent implications on adjusting the US foreign policy of counterterrorism to adopt an unprecedented strategical plan that led to the longterm and costly wars in Afghanistan and Iraq.