Likewise, the Afghan opium trade will continue. Regarding that trade, questions often arise concerning its relationship to the battle on the ground and the groups fighting that battle. As those who watched the Soviet military disintegrate in Afghanistan during the 1980s will remember, news stories occasionally appeared in the US media that mentioned the growing rates of drug addiction and use among Soviet conscripts. These mentions usually occurred in relation to the US desire to "make Afghanistan the Soviets’ Vietnam.". After all, the rampant drug use among American conscripts during its war in Vietnam was well documented. Despite apparent Pentagon efforts to hide the fact, some US soldiers and Marines in Afghanistan certainly take advantage of the opium and marijuana products produced in Afghanistan. However, the Pentagon seems more concerned with prescription drug and steroid abuse by its troops. However this doesn’t mean there is no US interest in the Afghan drug trade.

The author of Cruel Harvest, Julien Mercille, points out that the United States goverment meets its own definition of a narco-terrorist organization. This definition (provided by the US Drug Enforcement Administration (DEA) during testimony before Congress) describes such organizations as those groups which are "complicit in the activities of drug trafficking to further premeditated, politically motivated violence to influence a government or group of people." If this is narco-terrorism, than not only is the US government involved; it can be reasonably argued that it almost invented the practice. To prove his point, Mercille reviews the complicity of the Central Intelligence Agency and its predecessor the Office of Strategic Services in the drug trade since World War Two. Drawing on the work of Alfred McCoy (The Politics of Heroin) and others, he adds the intrigue in Afghanistan to that history.

In looking at McCoy’s work, Mercille acknowledges and accepts the volume and depth of the research he brings to the subject. At the same time, he rejects McCoy’s assumption that, even though the CIA was trafficking in drugs, other agencies in the US government were fighting the drug trade. Other researchers on this apparent interagency conflict include Douglas Valentine, whose books The Strength of the Wolf and The Strength of the Pack chronicle in concise detail the corruption, conflicts and lies of the DEA and its predecessor the Bureau of Narcotics and Dangerous Drugs. Despite the incredible research and writing involved in these books, it seems safe to assume that their readers know only a small portion of the story they tell, due to the nature of the topic and the secrecy and subterfuge of the agencies involved.

Cruel Harvest takes a sharp look at the history of US intervention in Afghanistan since the 1970s. It provides a background to US intervention in Afghanistan and the surrounding region while examining the growth of CENTCOM, the Pentagon command in that part of the world. He exposes the lies told by Jimmy Carter, Ronald Reagan and CIA man Bill Casey about Soviet intentions for the country and emphasizes that it’s the occupation that fuels the current insurgency, not the drug trade. Merceille substantiates the claim made by many in the antiwar camp that the US-NATO intervention in Afghanistan is nothing but an attempt to establish Washington’s dominance in a country where no outside power has done so for any extended period since Alexander the Great. Claims about freedom, women’s rights and every other excuse provided are proven to be untrue. Even drug prevention is shown to be a sham. After detailing Washington claims that the Taliban are partially funded by opium production, Merceille points out that most of the US allies in Afghanistan, including the Karzai government, are involved in opium and heroin production, as well. Indeed, the head of the Northern Alliance, Washington’s first ally in the mujahedin phase of the war in the 1970s and 1980s, was (and remains a well-known drug lord.) It becomes clear by the end of this book that Washington is not interested in eradicating drug production and trafficking. It just wants to ensure the people profiting from the business are willing to work in Washington’s interest.

Cruel Harvest does not claim that the US is in Afghanistan because of the drug trade; neither to end it or to profit from it. The text does explain that Washington has used drug profits to fund its covert and not-so-covert military and intelligence operations. It also points out that, while poppy farmers that pay taxes to the Taliban are targeted, those that align themselves with the US-supported regime rarely are. Furthermore, it makes the point that this practice is intentional. Mercille’s relatively short work is a useful, extensively cited and fact-laden discussion of the role narcotics production plays in the US occupation of Afghanistan.