This article breaks down how two major U.S. legal regimes—the Antiterrorism Act (ATA) and the Justice Against Sponsors of Terrorism Act (JASTA)—reshape remedies available to victims of terrorism. For a different perspective on risk and reward, see Are Big Casino Bonuses Worth It? Insights from the Finnish Market. I explain the core legal changes (expanded jurisdiction and new aiding-and-abetting liability), give real-world examples, and apply a strict comparison framework so advocates, victims, and policymakers can decide which legal pathway best serves their objectives. Expect advanced tactical techniques, practical trade-offs, and contrarian viewpoints about risks to diplomacy and legal principle.
1. Establish comparison criteria
We will evaluate legal options using consistent criteria so comparisons are meaningful. Use these six dimensions to judge any legal pathway for terrorism victims:

- Jurisdictional reach: Can the claim be heard in U.S. courts? Does it reach foreign actors and state sponsors?
- Liability theories available: Direct liability, aiding-and-abetting, statutes permitting civil claims (e.g., ATA, JASTA), or foreign sovereign immunity exceptions.
- Evidence burden: What proof is required—intent, knowledge, proximate cause?
- Remedies and enforceability: Money damages, injunctive relief, asset attachment, or diplomatic remedies; ease of collecting judgments.
- Speed and cost: Time to resolution and litigation expense.
- Policy and collateral risks: Foreign relations, reciprocal lawsuits, and separation-of-powers concerns.
These criteria let us compare three options: the pre-JASTA ATA regime (Option A), the post-JASTA landscape (Option B), and non-ATA civil/criminal alternatives (Option C).
2. Option A — Antiterrorism Act (pre-JASTA) with existing doctrines
Overview
The ATA (18 U.S.C. §2331 et seq.) provided a private civil cause of action for U.S. nationals injured by international terrorism. Before JASTA, the ATA allowed suits directly against terrorist organizations and persons who committed acts of terrorism, and invoked exceptions to foreign sovereign immunity only in limited contexts (notably statutes like the FSIA’s terrorism exception when applicable). Courts, however, were often restrictive about applying aiding-and-abetting liability and asserting jurisdiction over foreign actors for harms “felt” in the U.S.
Pros
- Established framework with judicial precedent clarifying direct liability standards.
- Lower risk of immediate international backlash because state immunity remained largely intact.
- Well-defined pleading standards for direct perpetrators, which can expedite early case rulings.
Cons
- Limited reach against secondary actors (banks, facilitators, states) because courts resisted expansive aiding-and-abetting theories.
- Jurisdictional hurdles for harm that has only an attenuated U.S. connection; plaintiffs often forced to rely on narrow hooks like injuries to U.S. citizens abroad.
- Collectability often limited when defendants are stateless groups or foreign persons without U.S. assets.
Real-world example
Pre-JASTA cases against foreign banks and indirect facilitators routinely failed to clear proximate causation or knowledge thresholds. Plaintiffs in early ATA suits struggled to hold state actors accountable because sovereign immunity remained a strong barrier.
3. Option B — JASTA (Justice Against Sponsors of Terrorism Act) and post-amendment ATA
Overview
JASTA (2016) amended the ATA and clarified two major points: (1) it expanded jurisdictional reach by explicitly allowing civil suits where an act of international terrorism “caused” injury to persons or property in the United States, and (2) it allowed claims for aiding-and-abetting or conspiracy to commit such acts for those who knowingly provided substantial assistance. This changed the legal landscape for holding secondary actors and certain foreign states accountable in U.S. courts.
Pros
- Expanded jurisdiction: Suits can proceed where effects of foreign terrorist acts are felt in the U.S., not just where the violent act occurred.
- Aiding-and-abetting liability: Enables claims against banks, charities, companies, or intermediaries that materially assisted terrorists.
- Improved leverage for plaintiffs to secure discovery, asset freezes, and settlements because defendants risk exposure and enforcement in U.S. courts.
Cons
- Sovereign immunity tensions: Suits against foreign states (e.g., allegations involving Saudi actors related to 9/11) raise reciprocity and diplomatic concerns; plaintiffs still face FSIA procedures.
- High evidentiary barriers remain for proving “knowing” and “substantial assistance”; courts scrutinize causal links and mens rea.
- Risk of politicization: JASTA’s creation outside typical treaty/diplomatic channels has prompted counterclaims and potential chilling effects on international cooperation.
Real-world example
9/11 families invoking JASTA pursued claims against Saudi-linked entities alleging material support. While many suits face dismissal and complex jurisdictional disputes, JASTA opened avenues previously closed. Another practical example: creditors and victims have used JASTA-era aiding-and-abetting theories to pursue banks that allegedly processed terror-related funds.
4. Option C — Alternative legal and policy tools (criminal prosecutions, FSIA exceptions, sanctions, and non-judicial remedies)
Overview
Option C collects non-ATA pathways for accountability: criminal prosecutions by the U.S. or allied states, using the FSIA terrorism exception against state sponsors (e.g., Iran), civil asset seizure under national security statutes, targeted sanctions, international tribunals, and diplomatic or political remedies. These are often complementary rather than exclusive alternatives.
Pros
- Criminal prosecutions can carry significant punitive force and allow for extradition requests, indictments, and international cooperation.
- FSIA terrorism exception has effectively allowed suits against countries officially designated as state sponsors of terrorism (e.g., Iran), with judgments sometimes collectible against frozen or state-controlled assets.
- Sanctions and diplomatic measures can have immediate policy impact and signal condemnation without requiring complex litigation.
Cons
- Criminal routes require state willingness to prosecute and significant evidence; many key players operate in uncooperative jurisdictions.
- FSIA exceptions apply unevenly—only to states on the state-sponsor list and typically for certain acts; collecting judgments remains politically sensitive.
- Sanctions and diplomatic avenues may not deliver compensation to victims and can be slow or reversible with geopolitical shifts.
Real-world example
Victims of the 1996 Khobar Towers bombing and attacks linked to Iran often relied on FSIA litigation and state-sponsored asset seizures to convert judgments into recoverable funds. Sanctions against terrorist financiers have also cut off resources, indirectly aiding victims’ long-term security interests.
5. Decision matrix
Below is a concise decision matrix rated qualitatively to help choose between Options A, B, and C. Use this matrix as a tactical checklist: prioritize the rows that reflect your primary objective.
6. Clear recommendations
Be direct: pick the path that matches the victim community’s immediate objective—compensation, deterrence, or structural change—and follow tactical steps below.
Recommendation 1 — If primary goal is compensation and asset recovery
Choose Option C where feasible, combined with Option B where direct civil avenues exist. Use FSIA exceptions against designated state sponsors; pursue sanctions to surface assets; combine with JASTA aiding-and-abetting claims against banks or intermediaries who routed funds. Tactical moves:
- Target state-controlled commercial assets and use aggressive discovery mechanisms under JASTA to link transfers to terrorism.
- Coordinate with treasury-sanctions teams for parallel asset freezes and leverage for settlement.
- Mount early Rule 69 execution and identify attachable assets globally.
Recommendation 2 — If goal is deterrence and changing behavior
Prioritize Option B: bring aiding-and-abetting suits against corporate facilitators (banks, tech platforms) with strong public-exposure potential. The litigation’s reputational cost can induce compliance and policy reform even if damages are limited.

- Use tailored discovery to compel internal communications showing knowledge of risks.
- Leverage media and legislative pressure alongside suits to increase deterrence value.
Recommendation 3 — If your concern is systemic or diplomatic harm
Adopt a hybrid: pursue criminal/prosecutorial engagement (Option C) and weigh the political costs of JASTA suits. If diplomatic relations or reciprocal suits present unacceptable risks, focus on sanctions and targeted litigation against non-state facilitators.
Advanced techniques (actionable and legal)
- Parallel Track Strategy: file civil suits under JASTA while coordinating with prosecutors to pursue criminal charges, enhancing bargaining power for settlements.
- Forensic financial chaining: use subpoenas and MLATs to trace small transfers through correspondent banking to show “substantial assistance.” Courts respond to concrete money trails more than abstract linkages.
- Strategic forum selection: file in jurisdictions with favorable precedents on proximate cause and discovery breadth (e.g., Southern District of New York historically favorable for complex international financial cases).
- Injunction leverage: seek early injunctive relief to preserve assets and force discovery that compels settlement discussions.
Contrarian viewpoints you must consider
Two major contrarian critiques deserve attention rather than dismissal:
- Diplomatic and reciprocity risk: Critics warn that carving exceptions from sovereign immunity invites foreign courts to reciprocate, potentially exposing U.S. officials and businesses to litigation abroad. This is not hypothetical: the expansion of jurisdiction can accelerate politicized lawsuits.
- Rule-of-law and separation-of-powers concerns: Some constitutionalists argue Congress overstepped by unwinding immunity protections without adequate international coordination, undermining treaty stability and executive branch foreign-policy prerogatives.
These arguments are actionable: weigh them when deciding whether to pursue state-focused litigation. If the plaintiff community prioritizes financial recovery and deterrence against non-state actors, the practical risks may be acceptable. If the case targets a foreign state with broad global ties, expect intense pushback and weigh alternative remedies.
Conclusion — How to decide and act now
In contrast to the earlier era when victims faced a narrow set of civil tools, JASTA has meaningfully expanded plaintiffs’ tactical options by broadening jurisdiction and enabling aiding-and-abetting claims. On the other hand, Option C remedies like FSIA-based suits and sanctions remain powerful where state sponsorship is clear. Similarly, the pre-JASTA ATA retained advantages in lower diplomatic friction but lacked reach.
Action plan for victims and counsel:
Ultimately, the modern toolkit is broader but more complex. Use the decision matrix above to choose a pathway that fits your goals, then deploy the advanced techniques here to maximize likelihood of recovery and accountability while managing the real political and legal risks.
