NEW YORK - Accusing Pakistans military of continuing to support the Taliban and other militant groups, a former U.S. diplomat of Afghan origin has called for curbing American aid on top of other steps, involving even India, to manage the "threat" from the South Asian country. "Even with Osama bin Laden dead, the nexus between the Pakistani state and a syndicate of Islamic extremists remains a threat," Zalmay Khalilzad, former American ambassador to the United Nations, wrote in The Washington Post on Friday. "In the short term, the United States should implement a two-phase strategy to insist on real change in Pakistans hostile policies," Khalilzad, who has always maintained an anti-Pakistan stance, wrote in the op-ed article: How to get Pakistan to break with Islamic militants. In this connection, Khalilzad, who is now a counselor at the Center for Strategic and International Studies -- a think-tank -- proposed that the US offer a "stark set of positive and negative inducements" seeking a change in Pakistan's policy. He also opposed President Barack Obama's plan to begin withdrawal of US troops from Afghanistan. "As we drawdown our forces in Afghanistan, persuading the Pakistani military to abandon its strategy of supporting extremism and backing Afghan insurgents will become more critical and more difficult," the diplomat said. "Without Pakistans cooperation, the insurgency will continue, but in light of our announced departure, Islamabad will see even less reason to stop sponsoring proxies as it prepares for the post-U.S. struggle in Afghanistan." (On Wednesday, Khalilzad was among guests at a black-tie dinner hosted by Pakistan's UN Ambassador Abdullah Hussain Haroon to celebrate Secretary-general's Ban Ki-moon's re-election for a second term. Indian Ambassador Hardeep Singh Puri was also present at the event.) "Should Pakistani intransigence persist, the United States will need a long-term strategy that manages the threat from Pakistan and embraces a broad multilateral effort to assist those Pakistanis who seek to transform their country," Khalilzad wrote. "This would, in part, require the United States to maintain a military presence in Afghanistan to counter the terror threat and assist in preventing the victory of Pakistani proxies in Afghanistan. We would also need to consider accelerating security ties with India as part of a containment regime against Pakistan. Most important, the United States would have to channel bilateral assistance to Pakistan in a way that empowers moderate civil society but reduces support for the military. "There is no guarantee this approach will overcome the ideological and religious allegiances that inspire Pakistani support for the insurgency in Afghanistan. Ultimately, only the Pakistani people and a new generation of civilian leadership can rein in the countrys military leaders." Meanwhile, he said, the expansion of northern routes through Central Asia provides the United States with alternatives to Pakistani supply lines. The drawd own of forces, according to him, will further reduce Washingtons logistical requirements, giving it greater freedom to launch unilateral operations against terrorist sanctuaries in Pakistan. "In exchange for Pakistan playing a constructive role in Afghanistan, the United States should be willing to: support expanded IMF and other multilateral assistance; sustain financial and military aid; and promote a major, multilateral diplomatic effort to mediate disputes among Afghanistan, Pakistan and India," Khalilzad said. "The initial focus must be accepting a reasonable agreement between Afghanistan and Pakistan and reconciliation with Pakistan-backed insurgents who accept U.S. red lines, followed by an India-Pakistan peace and normalization process. We should also support multilateral investment in infrastructure projects that would integrate Pakistan in regional commerce. "If positive inducements prove insufficient in securing reliable Pakistani cooperation, the United States should curb military assistance; mobilize coordinated financial pressure against Pakistan through allies and the IMF; and expand military operations against insurgent and terrorist targets in Pakistan."