America’s adversaries are deploying every espionage tactic imaginable to gain diplomatic, military and technological advantage. Seduction included.

The current context is not the only moment in the last decade when another nail has been driven into the coffin of the ration book.

Former Secretary of State Hillary Clinton sat for an hours-long, closed-door deposition in front of the House Oversight Committee, held near the Clintons’ home in Chappaqua, N.Y. She denied ever ...