Utterly wrong. Pakistan is not bullying any one.
Pakistan had to resort to a military response only in self-defense and after exhausting all other options, i.e. requests, visits, lengthy negotiations, involving friendly states (Chine, Turkey, Qatar, KSA, etc.), etc. and everything else failed to stop Afghan terrorists coming to Pakistan.
Pakistan started using its military force only after receiving a huge number of body bags. Still Pakistan agreed to Doha talks for the sake of avoiding more death and destruction in Afghanistan.