PESHAWAR, PAKISTAN - DECEMBER 17: Blood traces are seen on the floor of a class inside an army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: A view of the debris of a class inside the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: Blood traces are seen on the wall of a class inside the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: Pakistani soldiers walk in the debris of the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: A view of the debris of the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: A Pakistani official takes the picture of a frame hung on the ruined wall of army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: A Pakistani soldier walks in the debris of the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)
PESHAWAR, PAKISTAN - DECEMBER 17: A view of the debris of the army-run school that was attacked by Taliban on Tuesday, in northwestern city of Peshawar, Pakistan, on December 17, 2014. Taliban attack on an army-run school in Pakistan on Tuesday has left at least 141 people dead, most of whom students. (Metin Aktas - Anadolu Agency)