Deterrence depends on each side being able to hurt the other. In an 1866 cartoon described in the video, the world balances on threatening bayonets. As long as everyone holds their bayonet up, the world stays supported. If one participant lowers a bayonet to attack, that support fails. The image illustrates restraint through reciprocal danger.
Notable Point · 2:13:25-2:19:22
Deterrence as a balance of threats
A bayonet cartoon is used to explain restraint when each side can retaliate.