Mattis is creating a panel of experts to determine how the military should put President Donald Trump's new transgender guidelines into effect.
Sen. John McCain put forward a new strategy for the war in Afghanistan after the Trump administration didn't deliver one by its proposed deadline.
The U.S. State Department refuses to give Pakistan $50 million in military reimbursements, claiming Pakistan creates "safe havens" for terrorists.
Retired Vice Admiral Robert Harward won't be President Trump's next national security adviser.
President Trump sent formal approval for his Cabinet nominees shortly after being inaugurated.
The Washington Post reports outgoing U.S. Sen. Kelly Ayotte could be a top candidate for the position.
Rumsfeld told Fox News he couldn't vote for Hillary Clinton.