Well if they attack us by declaring a war on us then we will retaliate and bury them forever in the deserts of Afghanistan .But after the attack they denied and said it was a mistake and later also apologized. Similarly we train ,equip,finance and send the Taliban into Afghanistan who are responsible for killing thousands of american soldiers and after more than a decade they haven,t achieved anything in Afghanistan and defeated badly.But at the same time we are also denying .So we did not use our air force because we can,t afford to fight ,we did not because in reality wars cannot be started on such attacks and we handle such situations without openly declaring a war.But don,t worry our proxy war in Afghanistan is causing some serious grief for Americans and Indians there.
Some cheap bhartis are taking shots here but they should not forget when a a few dozen Chinese soldiers invaded their backyard in ladakh for several days and their army was sitting like ducks and did nothing .At least such invasion for several days without any action never happened in Pakistan.