Peace is unattained by part performance of conditions, even as a chemical combination is impossible without complete fulfillment of the conditions of attainment thereof.
It is a crime to put a Roman citizen in chains, it is an enormity to flog one, sheer murder to slay one: what, then, shall I say of crucifixion? It is impossible to find the word for such an abomination.
No state at war with another state should engage in hostilities of such a kind as to render mutual confidence impossible when peace will have been made.