Listen to this article:

Chandigarh: It is tempting – especially in sections of the media and some official commentary – to portray the imminent induction of a fourth of five Russian-origin S-400 Triumf regiments into the Indian Air Force (IAF), contracted in 2018 for around $5.43 billion, as the ultimate expression of the country’s air defence capability. That, however, would be an overstatement.

A more grounded assessment by a cross-section of military planners and defence analysts is that while this integrated air and missile defence system (IAMDS) significantly strengthens India’s long-range defensive aerial envelope – expanding its ability to track and engage multiple targets across varying altitudes and distances – it is not an inviolable magic shield.

Even so, this capability gain comes with emerging operational, manufacturing, and supply-chain constraints. More fundamentally, India’s indigenous air-defence programmes remain mired in inertia and fragmented development, limiting their ability to scale into a coherent, layered shield, thereby reinforcing continued reliance on systems like the S-400.

At the same time, growing dependence on the S-400 invites scrutiny over its battlefield effectiveness in light of the evolving threat environment from Pakistan and China, as well as its overall structural, sustainment, and financial viability. In practice, the Russian IAMDS faces an increasingly complex set of challenges from the Pakistani Air Force’s growing emphasis on stand-off munitions, drones, loitering weapons, and coordinated electronic warfare tactics designed to probe and saturate India’s air defence networks.

The S-400 is further stressed by the People’s Liberation Army Air Force’s expanding high-altitude strike capabilities across the Tibetan plateau, backed by long-range precision systems and integrated multi-domain operations. Both these challenges from the two collusive adversaries include swarm drone attacks, low-flying terrain-hugging cruise missiles, stealth and reduced radar cross-section aircraft, loitering munitions, and coordinated saturation strikes combining multiple vectors in quick succession.

These are increasingly integrated with electronic warfare designed to jam, deceive, or overload air defence sensors, while emerging hypersonic weapons further compress reaction times and complicate interception by the S-400s.

More broadly, modern multi-domain warfare across land, sea, air, and space is no longer about isolated strikes, but about synchronised, high-volume salvos designed to overwhelm air-defence networks and exploit gaps, often in conjunction with cyber and electronic disruption. In such an environment, even advanced systems like the S-400 can be saturated, confused, and degraded, rendering air defence a highly complex and contested domain.

High acquisition and sustainment costs

Alongside, the S-400’s high acquisition and sustainment costs – with replenishment requirements and supply-chain dependencies – underscore its long-term financial burden. In this latter context, a recent assessment by the London-based Royal United Services Institute (RUSI) think tank has raised concerns over the resilience of Russian defence production in general and the S-400’s in particular, which are under strain from sanctions related to the Ukraine war, industrial pressures, and an increasingly fragile reliance on external suppliers. RUSI warned that these factors could, together, affect long-term sustainment and scalability, even as the IAF continues to induct and double its S-400 inventory to 10 such regiments.

There is also a........

© The Wire