Recently, the United States ** Biden announced that it would withdraw its troops from Iraq, which undoubtedly dropped a shock bomb on the international community. This decision not only marks a major shift in U.S. strategy in the Middle East, but is more likely to be a prelude to a full-scale U.S. pivot toward China. 
What is the mystery of the once invincible United States now choosing to withdraw its troops from Iraq? Is it true that the United States is no longer able to maintain its influence in the Middle East? In fact, the truth is far more complicated than we think. The United States withdrew its troops from Iraq, first of all, we must recognize that the United States military presence in the Middle East has always been closely linked to its national interests. However, as time went on, the situation in the Middle East became more and more complex, and the United States felt that it was unable to cope with the intertwining of terrorism, religious conflicts, and political instability. The quagmire of the United States in Iraq has gone deeper and deeper. Over the past decade or so, the United States has invested enormous financial and human resources in the Middle East, but with little success. Staying there will not only cost more resources, but may also lead to more conflicts and crises. Withdrawing troops is a wise choice for the United States after realizing that the benefits are not proportional to the costs. More importantly, the United States is shifting its strategic focus to the Asia-Pacific region. With China's rise, the United States needs to maintain a strong presence in the region in order to assert its global hegemony. Therefore, withdrawing from Iraq and diverting more resources and attention to the Asia-Pacific region is an inevitable choice for the United States to deal with real challenges. 
However, the withdrawal of US troops does not mean that its influence in the Middle East will be significantly reduced. The United States has deep historical roots and extensive alliances in the Middle East. Moreover, the stability of the Middle East is of great importance to the global energy** and geopolitical landscape, and the United States will not give up this region easily. However, we must clearly see that the United States has reached the point of containing China to the point where it will do everything it can. From the Russia-Ukraine conflict to the turmoil in the Middle East to the tensions in the Asia-Pacific region, the "offshore balancing" strategy of the United States can be said to have been fully played. However, this practice of igniting fires and stirring up strife has also put the United States in a global predicament. Against this background, the United States can only choose to give it a free hand and devote itself to China after completing the "burden reduction" on the Middle East region. But that doesn't mean China will be tied down. On the contrary, China is ready to meet the challenge. China has made great progress and development in the economic, scientific and technological, and military fields. Of course, in the face of the comprehensive shift of the United States, China also needs to maintain strategic focus, strengthen its own strength, and actively expand the space for international cooperation. Only in this way will China be able to remain invincible in the game with the United States. 
In conclusion, Biden's order to withdraw troops from Iraq sends a major signal: the United States is fully pivoting to the East and starting a new global game. In this game, whoever can maintain strategic focus, strengthen its own strength, and actively expand the space for international cooperation will be able to win the final victory. Let's wait and see!