• Research
  • About
  • Experts
Carnegie India logoCarnegie lettermark logo
AI
Exaggerating the Threat of Bioterrorism

Source: Getty

Article

Exaggerating the Threat of Bioterrorism

The threat of bioterrorism has been greatly exaggerated. There are fewer state bioweapons programs today than 15 years ago and to date, no state is known to have assisted any nonstate or terrorist group to obtain biological weapons.

Link Copied
By Ben Bain and Joseph Cirincione
Published on Mar 16, 2006

Milton Leitenberg is one of America’s leading scientific experts on biological weapons.  He is a senior research scholar at the University of Maryland and has been writing in the field for nearly 40 years.  His report “Assessing the Biological Weapons and Bioterrorism Threat,” published by the U.S. Army War College Strategic Studies Institute provides a much-needed antidote to the pervasive exaggeration of the bioterrorism threat.

Leitenberg notes at the beginning of his report:

 

For the past decade the risk and imminence of the use of biological agents by nonstate actors/terrorist organizations—“bioterrorism”—has been systematically and deliberately exaggerated. In the last year or two, the drumbeat had picked up. It may however become moderated by the more realistic assessment of the likelihood of the onset of a natural flu pandemic, and the accompanying realization that the U.S. Government has been using the overwhelming proportion of its relevant resources to prepare for the wrong contingency.

 

Leitenberg points out that there are fewer state bioweapons programs today than 15 years ago and “to date, no state is known to have assisted any nonstate or terrorist group to obtain biological weapons.”  Additionally, “there is no justification for imputing to real world terrorist groups capabilities in the biological sciences that they do not possess.” 

 

According to Leitenberg, the exaggeration of the threat developed as “bioterrorism” became an all-encompassing term for any biological weapon use, be it by state or non-state actors.  He writes, 

 

That simple switch in language made it easy to transfer levels of state capability to “terrorists.”  Everything became and was referred to as “bioterrorism.” This wiped out any discrimination, or attempt to discriminate, between the relevant capabilities of state programs and existing terrorist groups as they are known to date. 

 

The perceived threats were blown out of proportion:

 

The possibility of incidents involving low numbers of casualties evolved in 2 or 3 years to “mass casualty” terrorism, and in several more years to “Apocalyptic Terrorism.” Generic terrorist groups…were endowed with the prospective ability to genetically engineer pathogens. Yet the resources and capabilities available to states and to terrorist groups are vastly different. 

 

His carefully written monograph puts the bioterrorism threat in context with other pressing problems, such as malaria, tuberculosis, and HIV/AIDS (that together kill 5 million people a year), diarrheal diseases (kill 3.5 million a year), and smoking (kills 5 million people a year) – not to mention the massive casualties from a possible pandemic flu outbreak. 

 

Leitenberg systematically dissects the inflated assumptions behind scenarios used as the basis for bioterrorism gaming exercises in the US.  For example, the 2001 Dark Winter exercise, a scenario involving aerosolized smallpox, “used a person-to-person secondary transmission rate (RO) of 10, three times the historical average of three.”  The 2005 Atlantic Storm exercise made “grossly misleading assumptions” about the ease of creating and then dispersing the same biological agent, again a dry powder smallpox preparation, a feat that neither the US nor Soviet BW programs ever achieved. 

 

Is bioterrorism, as Dr. Tara O’Toole, head of the Center of Biosecurity at the University of Pittsburgh says, “one of the most pressing problems that we have on the planet today.”?  Leitenberg concludes, “No.  Absolutely not.”

 

This is a must-read for all who want to understand the interplay of biological weapons, terrorism and global threats. 

 

Related Links: 

 

“Assessing the Biological Weapons and Bioterrorism Threat,” Strategic Studies Institute of the U.S. Army War College (December 2005)

 

“Bioterrorism, Hyped,” LA Times op-ed by Milton Leitenberg (17 February, 2006)

 

“Bioweapons,” Book Review of Leitenberg’s book The Problem of Biological Weapons (2004) 

 

About the Authors

Ben Bain

Joseph Cirincione

Former Senior Associate, Director for NonProliferation

Authors

Ben Bain
Joseph Cirincione
Former Senior Associate, Director for NonProliferation
Joseph Cirincione
North AmericaUnited StatesSecurityNuclear Policy

Carnegie India does not take institutional positions on public policy issues; the views represented herein are those of the author(s) and do not necessarily reflect the views of Carnegie, its staff, or its trustees.

More Work from Carnegie India

  • Commentary
    The Unresolved Challenges in U.S.–India Semiconductor Cooperation

    The U.S.–India semiconductor cooperation story is well-stocked with top-level strategic intent. What remains unresolved, however, are some underlying challenges that will determine whether the cooperation actually functions. Three such friction points stand out.

      Shruti Mittal

  • Article
    India’s Oil Security Strategy: Structural Vulnerabilities and Strategic Choices

    This piece argues that the present Indian strategy, based on opportunistic diversification and utilization of limited strategic reserves, remains inadequate when confronting supply disruptions. It evaluates India’s options in the short, medium, and long terms.

      Vrinda Sahai

  • Article
    What Could a Reciprocal Defense Procurement Agreement Do for U.S.-India Ties?

    India and the United States are close to concluding a Reciprocal Defense Procurement Agreement (RDPA) that will allow firms from the two countries to sell to each other’s defense establishments more easily. While this may not remedy the specific grievances both sides may have regarding larger bilateral issues, an RDPA could restore some momentum, following the trade deal announcement.

      Konark Bhandari

  • Commentary
    India Signs the Pax Silica—A Counter to Pax Sinica?

    On the last day of the India AI Impact Summit, India signed Pax Silica, a U.S.-led declaration seemingly focused on semiconductors. While India’s accession to the same was not entirely unforeseen, becoming a signatory nation this quickly was not on the cards either.

      Konark Bhandari

  • Commentary
    The Impact of U.S. Sanctions and Tariffs on India’s Russian Oil Imports

    This piece examines India’s response to U.S. sanctions and tariffs, specifically assessing the immediate market consequences, such as alterations in import costs, and the broader strategic implications for India’s energy security and foreign policy orientation.

      Vrinda Sahai

Get more news and analysis from
Carnegie India
Carnegie India logo, white
Unit C-4, 5, 6, EdenparkShaheed Jeet Singh MargNew Delhi – 110016, IndiaPhone: 011-40078687
  • Research
  • About
  • Experts
  • Projects
  • Events
  • Contact
  • Careers
  • Privacy
  • For Media
Get more news and analysis from
Carnegie India
© 2026 Carnegie Endowment for International Peace. All rights reserved.