INS Aridhaman And The Quiet Strengthening Of India’s Sea-based Nuclear Deterrent
In practical terms, that means India must be able to absorb a first strike and still retain the capacity to respond. Submarines are the most survivable leg of that triad because, unlike aircraft on bases or missiles in known locations, an SSBN at sea is difficult to detect, track, and target. That is why the expansion of the Arihant-class fleet is strategically consequential even when much of the programme remains officially opaque.