历史小径·世界史英语30篇（2）

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911事件与安全政策讨论

On September 11, 2001, hijacked planes struck the World Trade Center, the Pentagon, and a field in Pennsylvania—killing nearly 3,000 people from 90 nations.
Within weeks, the U.S. launched the ‘War on Terror’, invading Afghanistan to dismantle al-Qaeda and remove the Taliban regime that hosted it.
Homeland Security became a cabinet-level department, coordinating airports, border checks, emergency response, and cyber defense nationwide.
Passengers now remove shoes, limit liquids, and face biometric screening—procedures once rare outside high-risk zones.
Many countries updated anti-terrorism laws, expanding surveillance powers while sparking debates about privacy versus protection.
International cooperation increased: Interpol shared databases, Europol coordinated counter-radicalization programs, and ASEAN launched joint training exercises.
Scholars note that security policies also reshaped immigration, education visas, and community policing—sometimes increasing suspicion toward Muslim minorities.
Two decades later, policymakers still balance preparedness with civil liberties, asking how to prevent harm without eroding the values security aims to protect.