The US now counts drug runners as terrorists, expanding the number of groups is it targeting.
Articles on US national security
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It is becoming increasingly clear that Donald Trump is serious about annexing Greenland.
The US attack on Venezuela highlights a shifting American foreign policy that dismisses a rules-based global order and focuses on economic interests and military might.
And what does America’s new national security strategy mean for Europe?
The new US national security strategy says Europe faces ‘civilizational erasure’ due to high levels of immigration.
America’s new vision of its place in the world has left its European allies wondering whether Nato can survive in its current form.
The US system that classifies and protects secrets has emerged in a curious way since the 20th century.
America’s intelligence bosses would not accept that ‘Signal-gate’ represented a breach of security.
During the Cold War, the US poured support into Arctic military outposts and climate research amid fears of a Russian invasion. Climate change is still on the military’s radar as a threat multiplier.
The highest-ranking military officer in the country, the chairman has no direct command authority. His role is as a presidential adviser rather than a decision-maker.
During the first Trump administration, intelligence workers at many levels made political judgments about the information they assembled.
The director of the CIA is responsible for overseeing the agency’s clandestine operations and advising the president on national security matters.
The Department of Homeland Security’s massive bureaucracy has many critical national security functions and spends billions of taxpayer dollars seeking to keep the nation safe.
Chinese hackers are alleged to have broken into US phone networks, giving Chinese intelligence services a window onto specific Americans’ phone and messaging activity.
Under normal circumstances, Trump’s criminal record and other aspects of his life, including financial history, would disqualify him from getting access to classified information.
Under normal circumstances, Trump’s criminal record and other aspects of his life, including financial history, would disqualify him from getting access to classified information.
Privacy advocates lost out when Congress reauthorized Section 702 of the Foreign Intelligence Surveillance Act without major reforms. But the renewal fight returns in 2 years.
The big question: Would climate engineering like sending reflective particles into the stratosphere or brightening clouds help reduce the national security risks of climate change or make them worse?
Nuclear weapons production and testing contaminated many sites across the US and exposed people unknowingly to radiation and toxic materials. Some have gone uncompensated for decades.
One of the bedrock principles of the American legal system is that no one is above the law. When it comes to indicting a former US president, political factors must also be weighed.
Top contributors
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Professor of International Security, University of Birmingham
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Professor of International Politics in the Department of Political Science and International Studies, University of Birmingham
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Co-Director, National Security and Civil Rights Program, Loyola University Chicago
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Distinguished Practitioner in Residence, Loyola University Chicago
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Associate Professor of Law, The Ohio State University
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Professor of law and ethics, Georgia State University
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Professor of Civil and Environmental Engineering, Rice University
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Professor of the Practice of Political Science and International Relations, USC Dornsife College of Letters, Arts and Sciences
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Professor Emeritus of Communication, North Carolina State University
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Professor of Law, Harvard University
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Associate Professor of National Security Affairs, Naval Postgraduate School
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Professor of Criminal Law, Immigration, and Race and Law, University of California, Davis
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Reader (Associate Professor) in International Relations, University of Essex
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Assistant Professor of Earth and Atmospheric Sciences, Indiana University
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Professor of Law and Ethics, Georgia Institute of Technology