Weapon contracts

India is one of the biggest buyers of Russian weapons, and Singh is due to order billions of dollars worth of helicopters, missiles, and fighter planes.

India recently secured production licenses for T-90 tanks and contracts to provide Russian aircraft with BrahMos missiles.

The countries are building a modern supersonic fighter, equivalent to the US Raptor stealth fighter.

But tension has appeared over the cost of refurbishing the Soviet-built aircraft carrier Admiral Gorshkov for the Indian Navy.