Nawaz Sharif spoke after talks between political parties about the massacre.

Gunmen went from class to class shooting the students in the Pakistani Taliban's deadliest attack to date. Funerals of the victims are continuing.

The Afghan president says the "time has come" for his country to work with Pakistan to fight "extremism."

Ashraf Ghani said the two countries should "jointly take effective actions" following a surprise meeting with Pakistan's army chief in Kabul to discuss security co-ordination.