The latest on the Pentagon, State Department, Department of Homeland Security and national security.
Tillerson says US won't set preconditions for North Korea talks
By Nicole Gaouette, CNN
US to present evidence Iran is providing missiles to Yemen rebels
Navy ships in deadly crashes had lengthy training lapses
US military official: 50 ISIS foreign fighters captured since November
Haley cites 'will of American people' in defending Jerusalem decision
Haley slams UN for treatment of Israel in face of strong criticism
Pence and Abbas won't meet, vice president's office confirms
Tillerson says Jerusalem step changes 'nothing'
A dangerous choice looms for Trump on North Korea
US concerned Russian aircraft behavior could spark clash over Syria
US considers how to curtail Iran's 'malign influence'
Trump recognizes Jerusalem as Israel's capital
Tillerson seeks to bridge differences in Europe amid rumors of ouster
The 4 people charged in Mueller's investigation
Flynn case: What we learned in court and from filings
Breaking down Flynn's lies about his Russia calls
Meet CNN's security team
US Terrorist Attacks Fast Facts
Secret Service Fast Facts
George Tenet Fast Facts
Latest US sanctions against Russia a work in progress
Surprise inspections find 'significant issues' in treatment of ICE detainees
Haley: Missile debris 'proof' of Iran's UN violations
Khalid Sheikh Mohammed Fast Facts
Bombing exposes vulnerabilities of New York's subway
Homeland Security senior adviser promoted birtherism, said Obama knew 'nothing about the black American experience'
Wyden on Trump Jr.: Clearly intent to collude
How Mueller's path was muddied in two weeks
Ex diplomat: Trump and Tillerson hurting US ability to 'avert disasters'
Ex diplomat: US ability to 'avert disasters' at risk
Opioid tramadol destabilizes, fuels terror in parts of Africa, UN warns
Kentucky lawmaker killed himself after sexual assault allegations
Sources: US jets intercept Russians over Syria
Exclusive: US troops and Syrian forces battle ISIS near key base
Kids learn what to do if gunman comes to school
Trump can claim 'fairly serious achievements' in first year, Putin says