Unfortunately same applies to IEA.TTP won't be happy until they overthrow the state of Pakistan and establish an Islamic state.
I don’t think the state can afford to be involved in insurgency within the border of another country. Or are you saying supporting a proxy group to target the insurgents?We shouldn't take knee jerk actions , it should be carefully planned and information intelligence led. Last thing we want is to create more terrorists through heavy handed tactics. We need to work on the head of the enemy and find and focus on their weaknesses. Best to fight an insurgency with insurgency and give them a taste of their own medicine. Unleash the bounty hunters.
Pakistan did that in the early 90s and we’ve got the Taliban. Proxies tend to come back and haunt the same hand that feeds it.
I would suggest carefully planning operation against TTP in the form of target strikes, special operations behind enemy lines or target assasination. This can be a low intensity long term operation.