Changing the US Foreign Policy Strategy in the Region and Afghanistan

Bush's "anti-terrorism strategy", Obama's "counter-insurgency strategy" and Trump's "zero foot strategy" are three separate strategies of the US government during the three presidential terms in Afghanistan, which ended with the withdrawal of American forces. Ultimately, the withdrawal of US forces led to the resurgence of the same group that had sought to overthrow the Taliban government 20 years ago in 2001. This article aims to provide evidence supporting the change in strategy and its conflict with the overarching macro strategy, focusing on the shifts in Afghanistan's internal environment. We are looking for an answer to this question, what are the evidences of the change in the US foreign policy towards Afghanistan in the three mentioned periods and what is the relationship between the internal developments in Afghanistan and these changes? In response to this hypothesis, it is proposed that the role of internal opposition groups and their power in these three periods is the most important factor in creating a change in the attitude of the American foreign policy in the era of Bush, Obama and Trump. The findings of this article, according to the American high-ranking documents, show that the pursuit of conflicting strategies with the primary goals is a result of the failure of the strategy in the American foreign policy against the actions of armed groups. Considering the approach of comparative investigation and focusing on its descriptive stage, the method used in this writing is qualitative and of a comparative type.