The main purpose of this essay is to explore the new U.S. administration's foreign and cross-strait policies by examining the leadership of George W. Bush and the interactions between the key members of his foreign policy team and the President. The author will analyze how Bush Jr. learned and formulated his own ideas on U.S. foreign policy under the instructions of his strategic and foreign policy advisers. His prolonged learning process started from being involved in the election campaigns for his father, assuming the position of Texas Governor and becoming the GOP'S presidential candidate. As for the main theme of this paper, it is argued, that Bush could change his foreign policy after he becomes the master of the White House. The real question we should ask is to what extent he change. Indeed, he maintained a strong stance in the U.S. global strategy and foreign policy during the Y2K presidential election, claiming that if elected he would be tough toward Beijing and commit himself to helping defend Taiwan. However, he, after being elected, will conduct a foreign policy that combines humility with strength and maintain a realist approach toward the cross-strait relations. While we can comprehend his future foreign policy on the basis of bush's remarks during the campaign, we cannot take his words for granted. Judging from the appointments of key members of his foreign policy team and their remarks, we can at least know the main features of his foreign policy. It includes a policy of maintaining an edge in the international community without being arrogant, a cautious but responsible intervention policy, an Asia-oriented policy mixed with a policy of maintaining both Asian and European alliances, an intransigent of deploying the National Missile Defense system, and a largely balanced policy toward both sides of the Taiwan Strait.