In an Aug 12 story, AP reported the claims of some Pakistani officials that
Pakistan has its own concerns, accusing Afghanistan of harboring militants opposed to the Islamabad government. Pakistani security officials say their country’s rival India is allowed by Kabul’s intelligence agency to stage covert attacks against Pakistan using militants in Afghanistan. In the last six months, they say more than 200 Pakistani military personnel have been killed by insurgents crossing the border[.]
Is there any independent verification of the alleged scale of Pakistani military personnel losses due to "insurgents crossing the border"?