K Subrahmanyam, who shaped India?s national security polices for more than four decades, has passed away. He was 82. Subrahmanyam advised all prime ministers starting from Indira Gandhi on foreign and defence policies and had a decisive impact on India?s nuclear strategy and national security management. Above all, he got India to appreciate the logic of power in international affairs. As he boldly battled cancer in recent years, Subrahmanyam summoned his innermost energies to persist in the promotion of critical thinking about India?s national security. He was determined to make a difference until the very last.

As India rises on the world stage, Subrahmanyam?s contribution in getting its security establishment to ponder the nature of power and its political purpose will long outlast him. A relentless advocate of a powerful India, Subrahmanyam was also strikingly detached from power and its many manifestations in the Delhi Durbar. Unwilling to be co-opted by the allures of office and privilege, Subrahmanyam spoke truth to power often risking his own career advancement. His refusal to implement the draconian Emergency laws as Tamil Nadu?s Home Secretary in the mid 1970s underlined his strong sense of right and wrong. In turning down the Padma Bhushan award some years ago, Subrahmanyam was affirming an unfailing capacity to distinguish between the ephemeral and the enduring.

Subrahmanyam?s greatest reward was in schooling three generations of bureaucrats and politicians, diplomats and journalists, scholars and spies in thinking through the challenges of national security and in helping to construct contemporary India?s strategic community. As a member of the Indian Administrative Service, which he joined in 1951,

Subrahmanyam held many positions in the Indian establishment. These included the head of the Kargil Review Committee, Chairman of the Joint Intelligence Committee, Secretary Defence Production, Convener of the first National Security Advisory Board, and Director of the Institute for Defence Studies and Analyses.

Subrahmanyam?s extraordinary influence on policy, however, did not derive from the bureaucratic positions he held. It came from the power of his intellect, the courage of his convictions, and a rare capacity to mobilise elite opinion. Some of his peers used to describe Subrahmanyam as ?Swayambhu?. With an intellect that was self-manifest, Subrahmanyam did not need an official position make an impact on national security policy. Subrahmanyam was unaffected by the many political and ideological labels that were hurled at him so very often. His unremitting focus was on defining and promoting India?s national interest.

Because Subrahmanyam understood the power of ideas, he was always ready to break the barriers of conventional wisdom. Subrahmanyam will be long remembered for rescuing the Indian world view from the intellectual confusion that reigned in Delhi after the death of Nehru. He injected much needed realism into India?s world view since the mid 1960s.

If he was utterly austere, totally upright and completely detached in his persona, Subrahmanyam was forbiddingly intense in any intellectual engagement. As he became the unofficial intellectual spokesman for India?s policies in the 1970s and 1980s, his foreign interlocutors were often unnerved by his ferocious debating style. Those who got to know him a little better figured out that there was nothing personal in Subrahmanyam?s policy contestations. All that mattered to him was the advancement of India?s interests. No wonder he leaves a large number of admirers around the world. Just as he was prepared to question the opinions of his seniors, Subrahmanyam was ready to engage his junior-most colleagues in any argument. A child-like curiosity and openness to new ideas never deserted him. They made him young at heart until the very end of his life.

Subrahmanyam always insisted that real power was not about holding office, but affecting change?in the policies and mindsets of the Indian system. Nowhere was this more evident than in India?s nuclear thinking that Subrahmanyam changed single handedly. Stepping into the great Indian nuclear debate after China?s first nuclear test in 1964, Subrahmanyam mounted a successful campaign to prevent India from signing away its nuclear weapon option by joining the Nuclear Non-Proliferation Treaty. Calling atomic weapons the ?currency of international power?, Subrahmanyam became the foremost proponent of India exercising its nuclear option. Yet, Subrahmanyam did not turn nuclear weapons into a fetish. When Rajiv Gandhi ordered the building of nuclear weapons in the late 1980s, Subrahmanyam was instrumental in drawing up a strategy of restraint. He emphasised the irrelevance of American and Soviet nuclear doctrines and insisted that India must focus on building a limited but credible deterrent.

One of Subrahmanyam?s greatest passions was the reform of India?s security sector. His consistent advocacy resulted in the creation of the National Security Council system in 1998. While many of his contemporaries tended to repeat the old foreign policy mantra after the Cold War, Subrahmanyam sought to recalibrate India?s premises to the changed international context. A strident critic of US policies during the Cold War, Subrahmanyam was the first to see the opportunity to build a new partnership with the US in the last two decades. His enthusiastic support for the controversial civil nuclear initiative during 2005-08, was critical in tilting the balance in favour of the Indo-US deal.

Subrahmanyam transformed India?s national security discourse by breaking down the separate silos that once dominated the landscape. When he started writing on foreign and defence policies in the 1960s as the Director of IDSA, he confronted resistance from many official quarters. The Foreign Office, the Defence Ministry and the Service headquarters were all outraged by the young IAS officer?s temerity to write on subjects that were considered beyond public discourse.

If academia was irritated at a civil servant?s foray into the study of war and peace, it was appalled at Subrahmanyam?s prolific writing for the popular press.

The persistent effort to create a strategic community, an unending quest for an efficient national security policy, and the rich imagination of a strategy to claim India?s rightful place in the world, make Subrahmanyam?s intellectual legacy a lasting and formidable one.