Patrick Semansky / AP fileU.S. newsRussian hackers breach federal government, targeting multiple agencies
Smith Collection / Getty ImagesNational SecurityU.S. flew two bombers from Louisiana over the Persian Gulf to deter Iran, says military
Jessica McGowan / Getty ImagesNational SecurityAs Senate runoffs draw near, Pompeo warns Georgia students of Chinese influence on U.S. campuses
Mike Fuentes / Bloomberg via Getty Images fileNational SecuritySenate bid to block UAE arms sales falls short
Alex Wong / Getty ImagesNational SecurityTrump loyalist blocking some Pentagon officials from helping Biden transition
Kevin Frayer / Getty Images fileNational SecurityChina has done human testing to create biologically enhanced super soldiers, says top U.S. official
Robyn Beck / AFP via Getty Images fileNational SecurityTrump threatens to veto defense bill over social media protections
Brendan Smialowski / AFP - Getty ImagesNational SecurityWhen he leaves office, can ex-President Trump be trusted with America's national security secrets?
Bill Clark / CQ-Roll Call via Getty Images file2020 ElectionFlournoy could be first woman to run Pentagon, may pick many women for top roles
Angela Weiss / AFP - Getty Images fileNational SecurityBiden faces a race against the clock for U.S. to rejoin Iran nuclear deal
Tom Brenner / Reuters fileNational SecurityTrump national security adviser Robert O'Brien says it looks like Biden has won
Maja Hitij / Pool via Getty Images fileWorldAfter Trump, foreign allies wonder whether they can trust America, say former officials
Stanislav Krasilnikov / TASS via Getty Images2020 Election5 ways the Russians could wreak havoc on the election
Tom Brenner / Reuters fileNational SecurityNational security adviser O'Brien jockeys for future spot in a Trump administration
Press Office of Iranian Supreme Leader / via Getty Images fileNational SecurityTop U.S. officials were briefed on an active threat against Pentagon leaders, say five officials
Andrew Harrer / Bloomberg via Getty Images fileNational SecurityEmails show how Pompeos mixed personal, official business
Nicholas Kamm / Pool via ReutersNational SecurityTrump admin considers branding Amnesty International, other human rights groups as 'anti-Semitic'
Brendan Smialowski / AFP - Getty Images2020 ElectionTrump admin has known for weeks that Iran, Russia hacked local governments, say officials
Mikhail Svetlov / Getty Images fileNational SecurityTrump looks for foreign policy wins ahead of election
Chelsea Stahl / NBC NewsBusiness NewsChina took a page from Russia's playbook for 2020, but there's more to its plans, experts warn
Gabriella Demczuk / Pool via Reuters fileNational SecurityRatcliffe: No proof foreign actors tied to 'Biden' laptop. Officials: FBI is probing
David 'Dee' Delgado / Bloomberg via Getty Images fileNational SecurityCIA, other spy agencies gathered intel on Rudy Giuliani's dealings with alleged Russian agents
Nick Wass / AP fileNational SecurityFeds examining whether alleged Hunter Biden emails are linked to a foreign intel operation