President Asif Ali Zardari said that it was a wishful thinking that Taliban would take over Pakistans nuclear arsenal. He was confident that Indian government would be ultimately engaged in constructive dialogue. He said drone technology would augment Pakistans capability against terrorists who operate in virtual no mans land along the Pakistan-Afghan border. He hoped that India would not escalate the arms race in the region, adding that the government would keep open the option of dialogue without lowering its guard and would welcome the technology like drone predators. It has already increased its defence budget by 30 percent in the wake of Mumbai attacks, the President observed during a detailed interview with Turkish Radio & Television (TRT). The President was in the historic Turkish metropolis of Istanbul to attend two back-to-back summits---Trilateral conference among Pakistan, Afghanistan and Turkey (Monday) and Istanbul regional summit among Afghanistan and its six neighbours. He lauded Turkeys role in facilitiating dialogue among Afghanistan and its neighbours, hoping that the summit would help achieve the goal of peace and stability in that conflict-ridden country. He also hoped economic ties with Turkey would touch a new high with the launch of cargo train service from Islamabad to Istanbul via US $ 20 billion upgradation project of the 6,500 kilometre rail track between the two cities. Zardari said the Pakistani parliament had approved a 3-D Policy (Dialogue, Deterrence, Development) to counter the scourge of terrorism. Though the government believed in dialogue also, You cant put your guard down. We have always to be watchful against anti state extremists who already have done much damage, he said.