GAZA WARIsrael: Beyond Deterrence

By Lawrence Freedman

Published 31 October 2023

The logic of nuclear deterrence does not apply to deterring organizations such as Hamas and Hezbollah. It is this different type of deterrence that failed on 7 October 2023 and which may now never be restored. Israel now has been forced to look beyond deterrence. It has now concluded that it is dealing with an entity that has never truly been deterred and can’t be deterred in the future. This is where the other flaw in Israel’s past deterrence strategy becomes painfully evident. It has not been accompanied by a more positive political strategy.

Israelis describe their strategy as being based on deterrence. To avoid fighting wars they must show how well they can fight if necessary. Potential adversaries must be persuaded not to take aggressive action by warning them of the consequences if they do.

The conceptual framework surrounding deterrence developed around nuclear weapons. This is deterrence of a special kind, because of the absolute nature of the weapons and how hard it is to use them to win a war because of the threat of retaliation in kind. We can see the caution this induces at work in the Russo-Ukraine War. NATO has not engaged directly on Ukraine’s behalf; Russia has not attacked NATO countries.

Israel also practices nuclear deterrence. It has its own arsenal, which it prefers not to talk about. It is one geared to deterring Arab governments, and now Iran, from starting wars intended to destroy the Jewish state. As with all nuclear deterrence, it does not require demonstrations of what the weapons can do or a readiness to use them. All that is required is that potentially hostile governments are aware of what could happen if an inter-state war escalates too far.

For lesser contingencies, including the threats posed by Hamas, operating out of Gaza, and Hezbollah, operating out of Lebanon, deterrence looks quite different. It is not based on absolute weapons and nor does it offer constant relief from danger. There is no guarantee of success and so when it fails, if only slightly, it must be restored, more like a fence that easily breaks but can then be mended than a solid brick wall. So, unlike nuclear deterrence, there can be no sole reliance on threats but instead a readiness to respond forcefully to any challenge to bring home to adversaries the folly of attacking Israel.

It is this deterrence that failed on 7 October 2023 and which may now never be restored. An enemy so irredeemably hostile that it will always be looking for ways to attack, whatever the severity of the likely response, appears beyond deterrence. Instead of deterring Hamas, Israel now wants to eliminate it as a political and military force, but any relief achieved by this approach might also be only temporary.