For the first quarter-century of its existence, the IDF faced conventional military threats from enemies that vastly outnumbered, and often outgunned, it. But from the 1980s onward, it had to refocus its attentions on fighting asymmetric wars against Palestinian and Lebanese guerrillas and terrorists. It has recently realized that it must recalibrate once more to combat what it calls “diffuse, rocket-based terror armies”—most of which are backed by Iran. (Notably, IDF planners have chosen not to call these “terrorist groups” or “militias.”) To this end, it has developed its “Momentum” plan and a concomitant new strategic approach, which Eran Ortal describes:

For the first quarter-century of its existence, the IDF faced conventional military threats from enemies that vastly outnumbered, and often outgunned, it. But from the 1980s onward, it had to refocus its attentions on fighting asymmetric wars against Palestinian and Lebanese guerrillas and terrorists. It has recently realized that it must recalibrate once more to combat what it calls “diffuse, rocket-based terror armies”—most of which are backed by Iran. (Notably, IDF planners have chosen not to call these “terrorist groups” or “militias.”) To this end, it has developed its “Momentum” plan and a concomitant new strategic approach, which Eran Ortal describes: