The Defense Department says it has designated a second stretch on the U.S. border with Mexico as a military zone to enforce immigration laws.

A top Pentagon official says that special operations forces do not have the authority to launch drone attacks at drug cartels in Mexico.

Air Force fighter jets on Sunday intercepted a civilian aircraft flying in the temporarily restricted airspace near President Donald Trump’s Florida home, bringing the number of violations to more than 20 since Trump took office on Jan. 20.

Gen. CQ Brown, chairman of the Joint Chiefs of Staff, is visiting troops along the U.S.-Mexico border to assess the military’s progress in fortifying sections of the wall.

Military officials have released new video of a startling interaction between a Russian jet flying near Alaska and a U.S. plane sent to intercept it.