India and Russia today concluded the contract signing for a major 5 billion dollar missile deal that could invite sanctions from the United States of America. The deal for the S-400 missile defence system was finalised today in New Delhi in a meeting between Russian President Vladimir Putin and Prime Minister Narendra Modi. The deal for Moscow's most advanced surface-to-air defence system was said to be the focus of Mr Putin's two-day visit to New Delhi, however, its announcement was extremely low key, with neither of the two leaders saying anything in their statements to the media.