The Taliban bombing of a Peshawar market on October 28, in which at least 80 people were killed, is the most deadly militant attack to have occurred in Pakistan for two years. It marks a serious escalation in violence following the the Pakistani army’s decision to begin a new ground campaign against the Taliban in the Waziristan region, which borders Afghanistan, in mid-October.

The last time Pakistan saw such bloodshed was in October 2007, when at least 139 people were killed in a suicide bomb attack on Benazir Bhutto’s motorcade in Karachi.