Patience, positive incentives, and occasional feeble pressure have not induced Pakistan to end its double game. Yet, success against terrorism and extremism in Afghanistan and the region requires a change in Pakistan’s policy of support for such groups. To bring about such a change, the time has come to embrace a strategy that dramatically increases the cost to Pakistan of its current approach.

Zalmay Khalilzad, a former director of policy planning in the Department of Defense, was the U.S. ambassador to Afghanistan, Iraq and the United Nations. He is the author of The Envoy: From Kabul to the White House: My Journey through a Turbulent World. St Martin's Press.

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