(CNN) -- The slaughter of more than 130 children at a school by the Pakistani Taliban on Tuesday may prove as pivotal to Pakistan's national security policy as the 9/11 attacks were for the United States. For decades since its founding in 1947, Pakistan has conceived of its neighbor India as its main enemy. Indeed, the two countries have fought three major wars with each other as well as many smaller skirmishes. With Tuesday's attack, it is abundantly clear to all Pakistanis that their main enemy is the internal enemy -- the Pakistani Taliban. This realization has been a long time coming, but it has finally come because the Taliban have killed thousands of Pakistani soldiers, police and civilians over the past decade. And with Tuesday's attack the level of Pakistani outrage against the Taliban is now at unprecedented levels.
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Peter Bergen: Killing of more than 130 children at Pakistan school shocks a nation
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He says it's an indication of irreparable breach between Pakistan military and Taliban
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Bergen: Military sees its main enemy as internal terrorists rather than historic foe India
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He says Pakistani military says it has killed more than 1,000 terrorists in North Waziristan
Launching such an operation has long been a key demand of the @placeholder to the Pakistani military and government.