The INS Arihant, India’s first nuclear ballistic missile submarine that completed its sea patrol earlier this month, will contribute significantly to making India’s deterrence capability more robust. Submarine-based nuclear capability is the most survivable leg of a nuclear triad, and its benefit must be seen especially in the light of the growing naval capabilities of India’s potential adversaries. In this light, certain questions need to be addressed on the third leg of India’s nuclear triad, as well as major challenges for strategic stability in the southern Asian region.
Source : https://www.thehindu.com/todays-paper/tp-opinion/aligning-the-triad/article25572201.ece