"Pakistan is the primary victim of terrorism. We have lost thousands of lives including civilians and soldiers to terrorist violence," Sharif said in his address to the General Debate of the 70th session UN General Assembly here.
He said that the blood that has been shed, including that of innocent children, "has reinforced our resolve to eliminate this scourge from our society."
"We will fight terrorism in all its forms and manifestations, irrespective of who their sponsors are," he said.
He added that the operation is complemented by an all-inclusive National Action Plan that encompasses police and security actions, political and legal measures and social and economic policy packages, aimed at countering violent extremism.
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"The global threat of terrorism cannot be defeated unless we address its underlying causes. Poverty and ignorance are part of the problem. Extremist ideologies must be opposed," he said.
"Unfortunately, some seek to use the global campaign against terrorism to suppress the legitimate right of occupied peoples to self-determination," he said.
Sharif said that the rise and spread of terrorism across the Middle East also poses unprecedented security challenges.
"Wracked by violence, ethnic and sectarian conflicts, and the rise of Daesh, several countries of the region are today the vortex of conflict and instability. Others are being sucked into this quagmire," he said.
He expressed hope that the raising of the Palestinian flag at the world body's headquarters "is just the first step" and Pakistan looked forward to welcoming Palestine as a full member of the United Nations.