UN Expert Urges Global Definition of Terrorism to Protect Rights

Countries must urgently agree on a clear international definition of terrorism to prevent widespread human rights abuses and misuse of counterterrorism laws, a United Nations expert has warned.

Presenting a new report to the UN Human Rights Council, Ben Saul, the UN Special Rapporteur on the promotion and protection of human rights while countering terrorism, said decades of vague and overly broad legal definitions have enabled serious violations worldwide.

"For decades, vague and overbroad definitions of terrorism have led to countless human rights violations," Saul said.

Counterterrorism Laws Misused Against Critics

According to the report, poorly defined terrorism laws have been used by governments to suppress political dissent, silence civil society and justify harsh security measures.

These abuses have included:

• Unlawful killings

• Arbitrary detention

• Enforced disappearances

• Torture

• Unfair trials

• Violations of privacy

• Restrictions on political freedoms

"The abuse of counter-terrorism laws has become a tool of choice to suppress critics and civil society, including through transnational repression," Saul said.

He also warned that false accusations of terrorism have even been used to justify illegal military aggression, undermining international law and escalating conflicts.

Why a Clear Definition Matters

Saul stressed that international law requires precise criminal definitions so individuals understand what actions could lead to prosecution.

Without clear legal limits, counterterrorism measures risk criminalising legitimate political activity, peaceful protest and humanitarian work.

Overly broad definitions can also be counterproductive, the report notes, by fueling grievances and reducing cooperation with authorities, which ultimately weakens efforts to combat genuine terrorism.

Proposed International Definition

The Special Rapporteur's report proposes a model definition of terrorism that restricts the offence to the most serious forms of violence.

Under the proposed definition, terrorism would involve serious criminal acts that intentionally cause death, serious bodily injury or hostage-taking, and must also meet several additional criteria.

The act must:

• Intend to provoke a state of terror among the public or a specific group, or

• Seek to coerce a government or international organization into taking or refraining from a specific action

• Advance a political or ideological objective

• Cause serious harm to a country or international organization

Importantly, the definition focuses on serious harm to people rather than property, distinguishing terrorism from organized crime carried out for financial gain.

Safeguards to Protect Civil Liberties

The report also recommends several clear exceptions to prevent misuse of terrorism laws.

Activities that should not be treated as terrorism include:

• Peaceful protests that do not intentionally cause death or serious injury

• Conduct during armed conflict that complies with international humanitarian law

• Humanitarian activities by impartial aid organisations

• Lawful actions by state military forces

• Actions aimed at restoring democracy, constitutional government or the rule of law, or protecting human rights

These safeguards are intended to ensure that counterterrorism laws cannot be used to criminalise legitimate political activity or humanitarian assistance.

States Can Also Commit Terrorism

The report also warns that states themselves can commit acts of terrorism, and that government officials may be held criminally responsible under international law.

In responding to such situations, Saul stressed that other governments must continue to respect international legal standards.

Ensuring Effective and Legitimate Counterterrorism

Saul concluded that adopting a human rights–compliant definition of terrorism is essential for ensuring both effective security policies and protection of civil liberties.

"Adopting a definition that respects human rights is essential to prevent the abuse of counter-terrorism laws and narratives and ensure countering terrorism is effective and legitimate," he said.

The report calls on UN member states to accelerate negotiations toward a universal legal definition, a long-standing challenge in international law that has remained unresolved for decades.