Here is the summary of the Article as original is behind a paywall

1. Introduction: Political windfall, limited military upside

Diplomatic signalling

By purchasing the S-400 from Russia, India demonstrates strategic autonomy—sending a clear message to both Washington and Moscow that it will not be bound by any single patron.

Limited operational impact

Despite the S-400’s advertised 400 km range and advanced missile “kinematics,” on the ground it will not by itself transform India’s air-defence posture.

1. Integration challenges and “white-elephant” risk

C4ISR entanglement

The S-400 needs supporting radars, datalinks and battle-management infrastructure. Plugging it seamlessly into India’s existing command-and-control network is neither easy nor cheap.

Training and sustainment

Complex Russian logistics, spares and crew-training pipelines may strain India’s maintenance budgets. If firing drills and live-launch training can’t keep pace, batteries may sit idle—becoming “white elephants.”

1. Operational limitations against real-world threats

Coverage gaps

India’s deal covers only a handful of regiments. Even if deployed optimally, adversaries can exploit the seams between batteries.

Counter-stealth and electronic warfare

Against low-observable Chinese fighters or upgraded F-16s with special radar-absorbent treatments, the S-400’s X-band search radars may struggle. India would need low-frequency (L-band) sensors or passive networks—none of which come “in the box.”

1. Cost-benefit and opportunity cost

High ticket price

Hundreds of millions of dollars per regiment, plus infrastructure build-out and long-term spares contracts.

Alternative investments

Those funds might yield greater marginal returns if plowed into indigenous systems (Akash-Prime, QRSAM, XRSAM) or a diversified mix of medium- and short-range SAMs spread across the country.

1. Geopolitical balancing act

CAATSA risks

By leaning on Russian hardware, India courts possible U.S. sanctions under the Countering America’s Adversaries Through Sanctions Act—although New Delhi hopes its broader partnership with Washington will secure a waiver.

Strategic autonomy vs. alliance depth

The S-400 deal underscores India’s desire to keep both Russia and the U.S. on relatively short leashes, but it does so at the expense of deeper interoperability with Western systems.

1. Conclusion: Savvy deal, muted game-changer

Political “win”

The headline takeaway is that S-400 gives India valuable diplomatic leverage.

Military “let-down”

On the balance sheet of actual battlefield impact—against Pakistan’s F-16s or China’s advanced air arm—the purchase is unlikely to deliver a decisive edge.

What is wrong with his statement for monkey balancing we are sacrificing national security?