Unfortunately these Taliban scum are human, but with a very different set of values to Western ideals.
You have no more chance of getting the Taliban for forsake their pernicious version of Islam than you would get the Pope to renounce Catholicism. It's their belief system and they will never change it. After all, the penalty for apostasy in Islam is death.
What will be interesting is to see what the effect will be within Pakistan as the Pakistan Intelligence Services, the ISI were one of the founders of the Tasliban and have lent it support, whereas the Pakistan Military have been fighting the organisation. Now the Taliban have killed the children of the Pakistan military will this lead to a backlash against the ISI?