When Wahab disappeared from his home in Afghanistan to sign on for jihad, it was in neighbouring Pakistan that he got his training.
The 20-year-old was recruited by childhood friends and was taken to a militant outpost in Parachinar, on Pakistan's rugged mountainous border with Afghanistan.
There, he underwent training, preparing to fight alongside the Afghan Taliban, a relative told The Associated Press, speaking on condition of anonymity because of fear of reprisals from militants and government security agents.
As the Taliban swiftly capture territory in Afghanistan, many Afghans blame Pakistan for the insurgents' success, pointing to their use of Pakistani territory in multiple ways.
Pressure is mounting on Islamabad, which initially brought the Taliban to the negotiating table, to get them to stop the onslaught and go back to talks.
While analysts say Pakistan's leverage is often overstated, it does permit the Taliban leadership on its territory and its wounded warriors receive treatment in Pakistani hospitals.