India and Russia are expected to ink defence deals worth billions of dollars during the meeting in Goa on Saturday between Prime Minister Narendra Modi and President Vladimir Putin, on the sidelines of the BRICS summit. They include the procurement from Russia of four stealth frigates and five units of the S-400 anti-aircraft system, and the announcement of a joint venture for the manufacture of 200 Kamov-226T helicopters in India. In a game-changing arms acquisition, India is going to ink a Rs 39,000 crore deal for five new-generation Russian S-400 Triumf air defence missile systems, which can destroy incoming hostile aircraft, stealth fighters, missiles and drones at ranges of up to 400-km.  India and Russia are likely to sign as many as 18 agreements. Russia and India were close allies during the Cold War, but recently the relationship has become morecomplex. Talks have been held annually since 2000 and hosted alternately by Moscow and Delhi. Both sides will also approve a roadmap of measures timed to coincide with the 70th anniversary of the establishment of diplomatic relations between the two countries.