"The famous nuclear strategist Herman Kahn likened deterrence to a game of chicken played by reckless teenagers who drive their cars at each other and wait for the "loser" to swerve. Kahn wrote that perhaps the best way to win is to "get into the car quite drunk" and, when your opponent is watching, to "[take] the steering wheel and [throw] it out the window" -- a pretty solid, if irresponsible, way of convincing your enemy that you are willing to act against your own best interest... ...Despite these problems, Israel has regularly tried to deter Hamas, Hezbollah, and other terrorist groups. The record has been mixed. Fearing the Israeli response, these groups have at times limited attacks or refrained from them altogether, but they (and Israel) have resumed violence when their internal politics changed or because they believed the other side was behaving too provocatively. In addition to their use of terrorism, these groups also have mini-armies, run political parties, and operate schools and hospitals, making them more like quasi-states than a group like al Qaeda -- which isn't deterrable because it has no territory, is ideologically extreme, and has fewer constituents to lose. (Al Qaeda is always the drunk guy pushing the gas pedal down all the way after having thrown the wheel out the window.)"