The Senkaku Island dispute in the sea of Eastern China has consistently existed as a raw menace ever since the current eruption resulting into three islands purchase through the central government of Japan, 2012. On contrasting evidence, to the 2010 incidence of aftermath, the side of Chinese within the Xi Jin Ping new leader has broadened the argument through political, military and means of propaganda and the government of Abe hardening the perspective through insistence that there does not exist any dispute of territory and there also did not exist much shelving understanding over the dispute. There was rather an attempt towards counter balancing the political and military situations inclusive of military alliance strengthening with the repositioning of armed forces of Japan through US towards the Article 9 generally known as the constitution of peace. Therefore it becomes important to understand the nature of this conflict from the perspective of U.S. This conflict understanding is significantly essential as under the defense treaty of U.S, protection is present over the country of Japan drawing U.S also in this dispute especially when any resort is done by China through means of military. The complexity of the dispute further enhances because it can draw potentially larger areas of particular region through defense pacts range and mutual assistance treaties. Disputes on territories however are more general across the globe and mutual assistance treaties have a unique understanding on several aspects and characteristics.