Vietnam has revved up South China Sea land reclamation efforts this year, beginning construction on eight previously untouched Spratly Islands features.
The early warning radars on Greenland are key to defending the U.S. against nuclear attack, but they're vulnerable to hypersonic missiles, critics warn.
The Air Force has passed the point where more cannot be done with less. The Trump administration and Congress need to sufficiently resource the Air Force.
The DHS secretary took a shot at congressional Democrats in a public statement announcing that members of the Coast Guard will receive their paychecks.