David Welna David Welna is NPR's national security correspondent.
David Welna 2010
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David Welna

Defense lawyer Walter Ruiz represents Mustafa Ahmad al-Hawsawi, one of the detainees accused of orchestrating the Sept. 11, 2001, attacks. Michelle Shephard/Toronto Star via Getty Images hide caption

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Michelle Shephard/Toronto Star via Getty Images

Nation's Largest Court Case Inches Along In Guantanamo Bay

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News Brief: The Latest On The GOP Tax Bill; CVS Buys Aetna

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Arms Merchants Go To The Pentagon

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The ballistic missile submarine USS Rhode Island returns to port after a patrol. The president of the United States has the unilateral authority to order it to launch its nuclear weapons. MC1 James Kimber/U.S. Navy hide caption

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MC1 James Kimber/U.S. Navy

Shaken By Trump, Senators Ask: What Stops Him From Launching Nukes?

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Senate Panel Will Question Presidential Authority To Launch Nuclear Strike

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How The National Instant Criminal Background Check System Works

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U.S. Army Relocates Its Korean Military Base South Of Seoul

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What It's Like In The Demilitarized Zone That Divides North And South Korea

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News Brief: Mattis In Asia, Trump's Week, White Nationalists In Tennessee

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Mattis Calls For 'Denuclearization Of Korean Peninsula'

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