Why the Lahore Bombings are a Major Threat to Pakistan

Pakistan's Prime Minister, Nawaz Sharif, has cancelled this week's visit to Washington in the aftermath of the Easter Sunday suicide bombing in a park in Lahore. Sharif's change of plans is a measure of the boldness of the attack—in the Punjab, which is the heart of Pakistan's military establishment. That's according to Shamila Chaudhary, senior advisor at the Johns Hopkins School of Advanced International Studies, where she specializes in Pakistan.