On December 17, 2002, the United States sent an official request to urge the Denmark government to improve the U.S. Thule Air Base in Greenland so that Thule could be part of the Missile Defense Project. Before any decision was made, discussions in Greenland and Denmark were conducted, during which Denmark took an inactive, non-progressive stance on the proposed matter. Though Greenland had shown strong opposition to the construction of a Missile Defense within her territory, she came up with a compromised decision called “Igaliku Agreement”. In a nutshell - it was an agreement which allowed Missile Defense facilities on the Thule Air Base. This article aimed to clarify the reversal of Greenland’s initial decision of refusing the U.S.'s official request in upgrading the Missile Defense facilities in 2002, but which was subsequently agreed to in 2004.
 The key question articulated in this paper is how the relationship known as “Center-Periphery” was established, interpreted, and used for acquisition of needed areas within Greenland by the United States for its Missile Defense strategy. “Center-Periphery relationship” refers to the relationship that resulted through a predominantly political decision made by the United States in its relationship with Greenland, and a “predominantly” political decision made by Greenland in its relationship with Denmark. This was necessary to address Denmark's definition of its“mastery” over Greenland; as it impeded Greenland’s ability to independently establish its own role as a participant in the Missile Defense strategy.
 Prior to the establishment of a “Center-Periphery” status, the problem to any agreement was due largely to the definition of the United States as the “Center”of the security area in its relationship with Denmark and Greenland, whereas Denmark considered itself to be the “Center” based on its relationship with Greenland. As a result of Itilleq Agreement in 2003 and Igaliku Agreement in 2004, wherein Denmark took on the status of a “Semi-Periphery” relationship among the members of the Missile Defense strategy, Greenland was able to use the “Semi-Periphery” status that was applied to Denmark, to move itself to an independent negotiating position with the United States regarding the use of its territories for the Missile Defense strategy.

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