The government’s ability to boost the non-salary segment of the defense budget will be hampered by other commitments such as pension benefits.

India has decided to buy five S-400 supersonic air defense systems from Russia for an estimated 400 billion rupees ($6 billion) to guard against airborne threats from across the country’s borders.

India-based Aequs will supply machined components to Dutch firm Fokker Technologies for assembling Boeing’s Chinook helicopters, which India is also buying.