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

Questions Remain After North Korea Says It Will Dismantle Nuclear Weapon Fuel Sites

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Some Members Of Congress Want To Make Sure Contractors Get Backpay

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Federal Panel Considering Recommendations For Mandatory National Service

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The Supreme Court's decision allows the Pentagon to bar transgender people from joining the military while the lower court rulings that had blocked the policy are appealed. Al Drago/Getty Images hide caption

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Al Drago/Getty Images

As Shutdown Continues, Many Unpaid Federal Workers Are Frustrated And Angry

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A section of the reinforced U.S.-Mexico border fence in the Otay Mesa area, San Diego County, is seen from Tijuana in Mexico. President Trump says he may declare a national emergency to bypass Congress and build a border wall. Guillermo Arias/AFP/Getty Images hide caption

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Guillermo Arias/AFP/Getty Images

Yes, The President Can Declare A 'National Emergency' To Build A Wall

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The Capitol and Washington Monument are seen at dawn on Monday. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

Not Expecting Back Pay, Government Contractors Collect Unemployment, Dip Into Savings

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Defense Secretary Jim Mattis Tells Department To Defend The Constitution In Farewell

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New Armed Services Chairs Have Starkly Different Views On Measures, Spending

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Trump Picks Patrick Shanahan To Be Acting Secretary Of Defense

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The Many Conflicts Between Defense Secretary Mattis And President Trump

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Pentagon Confirms Mattis Resigns Effective Feb. 28

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Trump Administration Gives Russia Deadline To Comply With Missile Ban

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Trump Plans To Ask The U.S. Military To Pay For The Border Wall

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