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Domestic terrorism: federal definition (18 U.S.C. § 2331)
Acts dangerous to human life that violate U.S. or state criminal law; appear intended to intimidate or coerce a civilian population, influence government policy by intimidation or coercion, or affect government conduct by mass destruction, assassination, or kidnapping; occur primarily within U.S. territorial jurisdiction
International terrorism: federal definition (18 U.S.C. § 2331)
Violent acts or acts dangerous to human life that violate (or would violate) U.S. or state criminal law; appear intended to intimidate or coerce civilians, influence policy, or affect government conduct by mass destruction, assassination, or kidnapping; occur primarily OUTSIDE U.S. jurisdiction or transcend national boundaries
Which federal law defines domestic and international terrorism?
Title 18 U.S.C. § 2331 (2006)
Key difference between domestic and international terrorism
Location. Domestic = primarily within U.S. territorial jurisdiction. International = primarily outside U.S. jurisdiction or transcends national boundaries.
How can international terrorism 'transcend national boundaries'?
Through the means used, the persons it appears intended to intimidate or coerce, or the locale where perpetrators operate or seek asylum
Three ways terrorism tries to affect government (from the federal definition)
Intimidate or coerce a civilian population; influence government policy by intimidation or coercion; affect government conduct by mass destruction, assassination, or kidnapping
Terrorism is a ___ of committing an act (Lewis, 2026)
Means. The outcome of that act is often a crime.
Five most common themes in definitions of terrorism
Violence, Fear, Coercion, Political goals, High-profile attacks
Terrorism theme: Violence
Use or threat of violence to create fear and achieve political or ideological goals
Terrorism theme: Fear
Create fear among a wide audience, not just the victims
Terrorism theme: Coercion
Intimidation or coercion of populations or governments
Terrorism theme: Political goals
Achieve political goals when direct military victory is not possible
Terrorism theme: High-profile attacks
Dramatic and violent attacks to attract and maintain publicity
Two primary types of terrorism
Dissident (terrorism from below) and State-sponsored (terrorism from above)
Four primary causes of terrorism
Right-wing, Left-wing, Religious, and Narco/Criminal terrorism
Dissident terrorism
Terrorism from BELOW. Examples: establishing Marxism or Socialism in a capitalist society, or toppling an oppressive regime currently in power
State-sponsored terrorism
Terrorism from ABOVE. Governments use their military to suppress their own people, or use outside sources to impact policy
Example of state-sponsored terrorism from the deck
Iran using Hezbollah and Hamas against Israel
Terrorism from below
Dissident terrorism
Terrorism from above
State-sponsored terrorism
Why does state-sponsored terrorism against the U.S. often occur?
Other countries often lack the military technology to compete with the U.S. on the battlefield
Secular terrorists
Groups with irreligious ideologies and goals who use terrorism to achieve political aims
Right-wing terrorism
Reactionary (avoids change). Lacks a national/international agenda, often involves a single issue, and aims to preserve the status quo
Left-wing terrorism
Radical and progress-oriented. Has a national/international agenda (Marxism, Socialism, environment, etc.). Idealistic, future oriented, sees current government as corrupt
Which type of terrorism is reactionary and tries to avoid change?
Right-wing terrorism
Which type of terrorism is often associated with Marxist ideology?
Left-wing terrorism
Which type of terrorism is often single-issue with no national/international agenda?
Right-wing terrorism
Which type of terrorism sees the current government as corrupt and is future oriented?
Left-wing terrorism
Narco-terrorism / criminal terrorism
Gangs using drug trafficking, human trafficking, and other illegal means to fund the group or generate wealth
Golden Triangle
Myanmar (Burma), Laos, Thailand
Golden Crescent
Afghanistan, Iran, Pakistan
Myanmar, Laos, and Thailand make up which narco-terrorism region?
The Golden Triangle
Afghanistan, Iran, and Pakistan make up which narco-terrorism region?
The Golden Crescent
U.S. State Sponsors of Terrorism (the four countries)
Cuba, North Korea (DPRK), Iran, Syria
Who designates State Sponsors of Terrorism?
The U.S. Department of State
Cuba: State Sponsor of Terrorism designation date
January 12, 2021
North Korea (DPRK): State Sponsor of Terrorism designation date
November 20, 2017
Iran: State Sponsor of Terrorism designation date
January 19, 1984
Syria: State Sponsor of Terrorism designation date
December 29, 1979
Which country has been a State Sponsor of Terrorism the longest?
Syria (December 29, 1979)
Which country was most recently designated a State Sponsor of Terrorism?
Cuba (January 12, 2021)
Order of State Sponsor designations, oldest to newest
Syria (1979), Iran (1984), North Korea (2017), Cuba (2021)
Foreign Terrorist list (State Dept.): before 2025
The vast majority of identified organizations were associated with religious terrorism
Foreign Terrorist list (State Dept.): 2025 to today
The vast majority are associated with gangs from Mexico and Central/South America
Key agencies in the Department of Homeland Security (DHS)
Customs and Border Protection (CBP), Immigration and Customs Enforcement (ICE), Citizenship and Immigration Services (USCIS), Management Directorate (Federal Protective Services), TSA, FLETC, FEMA, Science and Technology Directorate, Office of Cybersecurity and Communications, U.S. Coast Guard, U.S. Secret Service
How many key DHS agencies are listed in the deck?
11
CBP
U.S. Customs and Border Protection (a DHS agency)
ICE
U.S. Immigration and Customs Enforcement (a DHS agency)
USCIS
U.S. Citizenship and Immigration Services (a DHS agency)
TSA
Transportation Security Administration (a DHS agency)
FLETC
Federal Law Enforcement Training Center (a DHS agency)
FEMA
Federal Emergency Management Agency (a DHS agency)
Which DHS directorate includes Federal Protective Services?
Management Directorate
Weapons of Mass Destruction: federal definition source
Title 18 U.S.C. § 2332a, 'Use of Weapons of Mass Destruction' (2006)
WMD category 1: destructive device (section 921)
Any explosive, incendiary, or poison gas, bomb, grenade, rocket with a propellant charge of more than four ounces, missile with an explosive or incendiary charge of more than one-quarter ounce, or mine or similar device
WMD category 2: chemical
Any weapon designed or intended to cause death or serious bodily injury through release, dissemination, or impact of toxic or poisonous chemicals or their precursors
WMD category 3: biological
Any weapon involving a biological agent, toxin, or vector
WMD category 4: radiological
Any weapon designed to release radiation or radioactivity at a level dangerous to human life
Four categories of WMD under 18 U.S.C. § 2332a
Destructive devices, toxic/poisonous chemicals, biological agents/toxins/vectors, and radiation/radioactivity weapons
Rocket propellant charge threshold in the WMD 'destructive device' definition
More than four ounces
Missile charge threshold in the WMD 'destructive device' definition
Explosive or incendiary charge of more than one-quarter ounce
Author observation: U.S. smart weapons
Linked to information technology systems that make them very accurate, difficult to detect, and extremely efficient even when launched great distances from the target
Weldon's observation about D.C. decision-making
D.C. makes many decisions based on budget, lobbyists, and political ideology, but seldom based on logic
Our 'worst fear'
An Electro-Magnetic Pulse (EMP)
Why is little done about EMP hardening in the private sector?
Standards exist for military use but are often too case-specific, expensive, and impractical for private sector implementation
Three primary areas of EMP impact
Computers that run major networks (electric grids, water supplies, etc.), communications centers, and power (electrical) transformers
Our 'real fear'
Small arms attacks by left-wing, right-wing, and radical religious groups (most likely future threat)
Besides EMP, what other feared attack types does the deck mention?
A dirty bomb and attacks involving NBC (nuclear, biological, chemical) components
Three U.S. approaches toward terrorism
Just War, Limited Involvement, and Isolationism
Which approach does the U.S. currently practice?
Limited Involvement
DOJ jurisdiction over terrorism
Domestic terrorism is a criminal law issue regardless of the offender's nationality. It falls under DOJ.
DOD jurisdiction over terrorism
People committing terrorist acts and identified as terrorists outside U.S. borders, regardless of nationality (includes U.S. citizens)
A U.S. citizen identified as a terrorist acting outside U.S. borders falls under which department?
DOD
A terrorist act inside the U.S. falls under which department, regardless of the offender's nationality?
DOJ
Hindsight argument about U.S. reaction to ISIS and the World Trade Center attack
Many argue the U.S. under-reacted to ISIS/ISIL and over-reacted to the World Trade Center attack
True or False: Domestic terrorism occurs primarily outside U.S. territorial jurisdiction.
False. Domestic terrorism occurs primarily WITHIN U.S. territorial jurisdiction.
True or False: International terrorism can transcend national boundaries through its means, targets, or where perpetrators operate or seek asylum.
True
True or False: Both federal definitions of terrorism come from Title 18 U.S.C. § 2331.
True
True or False: Dissident terrorism is terrorism from above.
False. Dissident terrorism is terrorism from BELOW. State-sponsored terrorism is from above.
True or False: State-sponsored terrorism can involve governments using outside groups to impact policy.
True. Example: Iran using Hezbollah and Hamas against Israel.
True or False: Terrorism is a means of committing an act, and the outcome of that act is often a crime.
True (Lewis, 2026)
True or False: The 'fear' theme means terrorism aims to frighten only the direct victims.
False. It aims to create fear among a wide audience, not just the victims.
True or False: One common theme is that terrorism is used to achieve political goals when direct military victory is not possible.
True
True or False: Right-wing terrorism is idealistic and future oriented.
False. That describes left-wing terrorism. Right-wing is reactionary and aims to avoid change.
True or False: Left-wing terrorism is often associated with Marxist ideology.
True
True or False: Right-wing terrorism often involves a single issue and aims to preserve the status quo.
True
True or False: Secular terrorists use terrorism for religious goals.
False. Secular terrorists have irreligious ideologies and use terrorism to achieve political aims.
True or False: The Golden Triangle includes Afghanistan, Iran, and Pakistan.
False. That is the Golden Crescent. The Golden Triangle is Myanmar (Burma), Laos, and Thailand.
True or False: Narco-terrorist groups use drug trafficking and human trafficking to fund the group or generate wealth.
True
True or False: Syria is the most recently designated State Sponsor of Terrorism.
False. Syria has been on the list the longest (December 29, 1979). Cuba is the most recent (January 12, 2021).
True or False: Cuba was designated a State Sponsor of Terrorism in 2021.
True (January 12, 2021)
True or False: Iran was designated a State Sponsor of Terrorism before Syria.
False. Syria (1979) came before Iran (1984).
True or False: North Korea was designated a State Sponsor of Terrorism in 2017.
True (November 20, 2017)
True or False: Before 2025, most organizations on the State Department's foreign terrorist list were associated with religious terrorism.
True
True or False: Starting in 2025, most organizations on the State Department's list are religious groups.
False. Starting in 2025, most are gangs from Mexico and Central/South America.
True or False: The TSA is a key agency within the Department of Homeland Security.
True
True or False: The FBI is one of the key DHS agencies listed in the deck.
False. The FBI is not on the DHS list in the deck. DHS agencies include CBP, ICE, USCIS, TSA, FLETC, FEMA, Coast Guard, and Secret Service.
True or False: Federal Protective Services falls under DHS's Management Directorate.
True
True or False: The federal definition of WMD (18 U.S.C. § 2332a) only covers nuclear weapons.
False. It covers destructive devices, toxic/poisonous chemicals, biological agents/toxins/vectors, and radiation-releasing weapons.
True or False: A weapon involving a biological agent, toxin, or vector counts as a WMD.
True