‘War on terror’: How 9/11 changed the language of conflict
After the September 11, 2001 attacks, US political and military leaders adopted a new set of terms — including 'enhanced interrogation', 'extraordinary rendition' and 'enemy combatants' — that reframed violent or legally dubious practices in clinical language. That vocabulary accompanied the broad 'war on terror' framework, which enabled overseas invasions, the Guantanamo detention system, secret CIA prisons and expanded domestic security powers.
Why It Matters
The change in language helped normalize measures — such as indefinite detention, covert transfers and harsh interrogation techniques — that critics say eroded legal protections and human rights. Those discursive shifts continue to shape US policy debates even as the phrase 'war on terror' appears less often.
Key Facts
- Date of attacks: September 11, 2001
- Authorisation signed: Authorisation for Use of Military Force signed on September 18, 2001
- Early invasions: US invaded Afghanistan less than a month after 9/11; Iraq invasion began in March 2003
- Guantanamo detainees: Nearly 780 people passed through the US military prison at Guantanamo Bay
- Detainee outcomes: All but a handful have since been freed without ever being charged; some were held for up to two decades
The aftermath of the September 11 attacks brought a new official vocabulary to the fore in US policy and public discourse. Terms that might once have signalled criminality or brutality were repackaged in administrative or technical language — for example, torture was described as 'enhanced interrogation', cross-border abductions as 'extraordinary rendition', detainees were labelled 'enemy combatants', and lethal operations were framed as 'surgical' or 'targeted' strikes. Those word choices shifted the tone of debate and made aggressive practices sound more like routine instruments of statecraft.
That lexicon was anchored by the broad declaration of a "war on terror," a concept that President George W. Bush used to mobilise support and to frame global action. Congress quickly approved a sweeping authorisation for the use of force in mid-September 2001 that gave the president latitude to use military power against those tied to the attacks. Scholars note that because terrorism is a tactic rather than a state or territory, declaring a war against it produced a campaign without clear geographic limits or a fixed endpoint, allowing operations to extend across borders and into covert realms.
The language and legal framework had tangible consequences. Within weeks the US invaded Afghanistan and later led a coalition into Iraq in 2003 on grounds that were later disproved about weapons of mass destruction. The response also produced systems of detention and secret interrogation: nearly 780 people passed through Guantanamo Bay, most were never charged and some remained detained for years. The CIA ran overseas 'black sites' and abuses at places such as Abu Ghraib became public scandals. Reported interrogation methods included waterboarding, prolonged sleep deprivation and stress positions, while lawyers and activists documented the detention of teenagers among the camp population.
Experts interviewed for this analysis argue that the new rhetoric both sanitised and legitimised measures that would be harder to justify under conventional legal and moral scrutiny. Academics say the discursive framing helped to demonise opponents and close off debate by casting complex problems in stark moral terms. Although the explicit use of the phrase 'war on terror' has declined in recent years, commentators contend that many of the policies and assumptions it birthed remain embedded in US politics and security practice.
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