BANGALORE (Agencies) - Indian Prime Minister Manmohan Singh on Wednesday asserted that terrorists could never succeed in destroying the unity of the country and the spirit of the nation, reports Indian TV channel Doordarshan. Paying tributes to Professor M C Puri who was killed in the terror attack on the Indian Institute of Science Campus three years ago, the Indian Premier said, "They (terrorists) chose the Indian Institute of Science as their target because this great institution and this vibrant city have come to represent the spirit of a resurgent India." "No coward, no terrorist, no enemy of our secular and democratic Republic will ever succeed in destroying the unity of our country, the journey of our people towards a better life and the spirit of the nation", he said inaugurating the centenary celebrations of the IISc in Banglore on Wednesday. Speaking on the occasion, Karnataka Chief Minister B S Yeddyurappa said that in view of the fact that Karnataka and Bangalore, in particular, had attracted global attention due to presence of various prestigious enterprises, the state government has decided to enhance security to face any eventuality. Seeking the Centre's support in enhancing security, he said the state government has sought setting up of an NSG unit in Bangalore, three Indian Reserve Batallions, one Indo-Tibetan Border Police battalion in Belgaum, 18 coastal check post and 33 outposts, two helicopters and additional grant to enhance security level. PM Manmohan called on the scientific community to spread the spirit of scientific temper, the light of liberal learning and critical enquiry among the people to build a "knowledge-based" society and economy. "We need an opening of the Indian mind. We cannot allow unreason to dominate reason and intolerance to threaten the spirit of tolerance and dispassionate enquiry that is at the heart of Indian culture," he said. Meanwhile, the United States on Wednesday promised "full cooperation and support" to India at various levels to deal with the consequences of the Mumbai terror attacks even as the two sides asserted that the perpetrators of the carnage be held accountable. "All the interlocutors expressed sympathy and support to the government and people of India in the context of the heinous terrorist attacks in Mumbai. Unequivocal condemnation of the incident and the need for the perpetrators to be held accountable was reiterated," the Indian Embassy said in Washington after Foreign Secretary Shivshankar Menon met with senior State Department officials. "It was also indicated that there would be full cooperation and support at various levels, including government, from the US to India as it dealt with the consequences of the incident," the Embassy statement said. Menon met Deputy Secretary of State John Negroponte and Under-Secretary of State for Political Affairs William Burns during his two-day visit to Washington. "The meetings covered a range of bilateral issues, including counter-terrorism cooperation, anti-piracy coordination, India-US civil nuclear agreement, defence trade, space cooperation and furthering economic and investment relations between the two countries," the statement said. Menon also had a conversation with Senator John Kerry, the Chairman of the Sub-Committee on Near East, Central and South Asia in the Senate Foreign Relations Committee and met with several think-tanks and influential opinion-makers. The Foreign Secretary also had meetings with others, including House Majority Leader Steny Hoyer; Chairman of the Senate Banking, Housing and Urban Affairs Committee Christopher Dodd; Ranking Member of the Senate Foreign Relations Committee Richard G Lugar; and Ranking Minority Member for Subcommittee on Financial Institutions and Member, Senate Foreign Relations Committee, Chuck Hagel.