India is expecting the delivery of its first guided-missile warship from Russia by the end of this month. However, the delivery of S-400 air defense systems and a nuclear-powered attack submarine has been delayed. Delivery of fourth and fifth squadrons of S-400 surface-to-air missile systems, under the $5.43 billion (Rs 40,000 crore) contract inked with Russia in 2018, in turn, will take place only by 2026.