"A Problem from Hell": America and the Age of Genocide (2002) is a book by American Samantha Power, at that time Professor of Human Rights Practice at Harvard's John F. Kennedy School of Government, which explores the United States's understanding of, response to, and inaction on genocides in the 20th century, from the Armenian genocide to the "ethnic cleansings" of the Kosovo War. It won the J. Anthony Lukas Book Prize and the Pulitzer Prize for General Non-Fiction in 2003.

Power observes that American policymakers have been consistently reluctant to condemn mass atrocities as genocide or to take responsibility for leading an international military intervention. She argues that without significant pressure from the American public, policymakers have avoided the term "genocide" altogether, which came into more widespread use after the Holocaust of World War II. Instead, they appeal to the priority of national interests or argue that a U.S. response would be futile and accelerate violence, as a justification for inaction. She thinks such justifications are usually ill-founded.^[1]

Power begins with an outline of the international response to the Armenian genocide (Chapter 1). She next describes Raphael Lemkin's efforts to lobby for American action against Nazi atrocities in Europe (Chapter 2). She expands on the difficulties encountered by individuals who tried to convince US representatives and other members of the Allied Powers to recognize the Holocaust. She says this difficulty was compounded by the Allies focus on World War II and suggests that much indifference was based in anti-Semitic attitudes.(Chapter 3).

She recounts how Lemkin brought genocide to the forefront of foreign policy issues after the war, leading to the 1948 U.N. Convention on the Prevention and Punishment of the Crime of Genocide. Lemkin had mounting disappointments and multiplying adversaries until his death in 1959. Senator William Proxmire (D-Wisconsin) and others took over fighting for preventing genocides and encouraging US leadership on this issue. Senator Proxmire and Republican President Ronald Reagan worked to gain support during his administration for the ratification of the Genocide Convention (Chapter 7). In the rest of the book, she focuses on genocides in individual nations and the U.S. response to such crises in Algeria, Cambodia, Iraq, Bosnia, Rwanda, and Kosovo.