Even South Korea's President Roh Moo-Hyun had to obtain permission from the United Nations Command (UNC) in order to cross the dividing line between the two Koreas on his way to the summit with his counterpart Kim Jong-Il in Pyongyang. The UNC has used its authority to grant permission to cross the dividing line as a wedge in the inter-Korean Railway Projects, and the United States government, which commands the UNC, has been engaged in a tug-of-war to preserve the armistice regime and the Cold War order in Northeast Asia.