Negotiations with the Taliban collapsed after the execution of 23 Frontier Corps by the Taliban on 17 February 2014 , and relations worsened with the Taliban 's 2014 Jinnah International Airport attack . Operation Zarb-e-Azb was formally launched on 15 June 2014 after the Sharif administration prepared for a three-front offensive : isolating targeted militant groups , obtaining support from the political parties , and protecting civilians from reprisals . The 2014 Wagah border suicide attack has been the deadliest retaliation against the operation so far
2014 Wagah border suicide attack
2014 Wagah border suicide attack
Nawaz Sharif