The Trump administration has taken an ownership stake in Ukraine’s recovery. Now what?

As the administration challenges rules of armed conflict, it is vital to protect the military justice system from executive overreach.

The world banned biological weapons 50 years ago, but the threat is still growing.

China might use its expanding coercive toolkit to put Taiwan in its crosshairs.

Military political neutrality in a democratic society is, and always has been, more than a promise of obedience.

The recently announced mineral deal is likely a lawful “sole executive agreement” that the president need not submit to Congress, but subsequent implementing agreements are likely to raise questions of l...