A second way of making the threat of retaliation credible is to give many individuals the option of initiating an overwhelming strike. This is the proliferation solution. Then, when the enemy is contemplating an attack they must gauge the chance that at least one of these people is motivated by revenge. The more people who have the ability to launch a retaliatory strike, the more likely it is to happen. If retaliation is likely, then there will be no attack in the first place.
