Columbia subject headings:
Peace--History.
Richelieu, Armand Jean du Plessis, duc de, 1585-1642.
War (International law)--History.
War--Moral and ethical aspects--History.
Harvard subject headings:
Peace--History
Richelieu, Armand Jean du Plessis, duc de, 1585-1642.
War (International law)--History.
War--Moral and ethical aspects--History.
Princeton subject headings:
Peace--History.
Richelieu, Armand Jean du Plessis, duc de, 1585-1642.
War (International law)--History.
War--Moral aspects--History.