Army Public School attack (December 2014)
On Dec 16, 2014, six TTP gunmen entered Army Public School in Peshawar and killed 149 people, most of them children. It was the deadliest terrorist attack in Pakistan's history.
Pakistan launched Operation Zarb-e-Azb, a military offensive in North Waziristan, and adopted the National Action Plan against terrorism.
The assault marked the peak of TTP violence against civilian institutions and triggered a military response that pushed the group out of its tribal strongholds.
Shows how a single high-casualty TTP attack historically triggered a sweeping Pakistani military response. The question now is whether this bombing prompts a similar escalation.
