Secretary of Defense James Mattis said he won't rule out a possible military strike against Syrian President Bashar Assad's forces following a suspected chemical attack that killed dozens in a town near Damascus.
Secretary of Defense James Mattis met President Trump's new national security adviser, John Bolton, at the Pentagon Thursday afternoon, and he broke the ice with a joke.
Defense Secretary James Mattis said Wednesday the Pentagon will submit proposals to the White House for holding a military parade called for by President Trump.
A University of Michigan history professor thinks pop singer Ariana Grande understands counterterrorism better than U.S. Secretary of Defense James "Mad Dog" Mattis.
Secretary of Defense Gen. James Mattis let one journalist know how accurate his fearless reputation apparently is.
At a press conference Tuesday, Secretary of Defense Gen. James Mattis was asked by a reporter why the United States responded to Syria's chemical weapons attack, but not to the Assad regime's use of barrel bombs.
In her Opening Statement on Saturday, Judge Jeanine Pirro slammed Democratic National Committee Chairman Tom Perez for questioning President Trump's legitimacy.
Defense Secretary James Mattis called out Russia for "mucking around" in other nations' elections, declaring that Moscow is acting like a "strategic competitor."
President Donald Trump spoke to a group of senators gathered at the White House on Tuesday, telling them that the US is doing "very well" in Iraq and "our soldiers are fighting like never before."
Visiting a global security summit in Munich, Germany, Sen. John McCain (R-Ariz.) said that President Trump's White House is "in disarray" and added that the president often publicly contradicts himself.
Defense Secretary James Mattis is warning of an "arc of instability" on Europe's periphery.
Fox News strategic analyst Ralph Peters weighed in on the resignation of Michael Flynn as national security adviser and put forward an unlikely candidate for the job.