<p>The return of the Taliban has undermined EU external action reversed twenty years of state-building efforts and represents the most significant failure of EU foreign policy to date. </p><p> Drawing on over 100 hours of interviews with key actors and an in-depth examination of the EU's state-building efforts this book offers unparalleled insights into the complex interplay between transatlantic relations and the resurgence of the Taliban. It critically evaluates the EU's strategies advocating for a nuanced historically informed approach to international relations. </p><p> Indispensable for academics policy makers and anyone vested in the intricacies of foreign interventions in an ever-complex global environment.</p>