Modi says committed to no first use of nuclear weapons

But he said he would pursue a policy of continuity based on the approach of former Bharatiya Janata Party (BJP) prime minister Atal Bihari Vajpayee who declared a policy of no first use of nuclear weapons after ordering the tests.

"No first use was a great initiative of Atal Bihari Vajpayee - there is no compromise on that. We are very clear. No first use is a reflection of our cultural inheritance," Modi told ANI.

His comments came a week after the BJP unveiled its manifesto, pledging to review the nuclear doctrine, whose two main pillars were a no first-use commitment and building a credible but minimum nuclear arsenal.

The pledge, to "study in detail India's nuclear doctrine, and revise and update it, to make it relevant to challenges of current times", gave no specifics but raised concerns among former U.S. diplomats that the policy of no first use would be abandoned. The State Department itself declined to comment.

Two sources involved in the drafting of the manifesto said the party wanted to reconsider the no first use policy in the wake of advances made by Pakistan in the area of tactical nuclear weapons.