US
Russian envoy-designate to India said they don't see any hurdle in supply of the S-400 missile systems to India
Trump administration urging New Delhi to drop $5.5 billion deal with Moscow to avoid diplomatic crisis
Confronting Turkey with a matter like CAATSA is disrespectful to a very important NATO partner, says Turkish president
The S-400 surface-to-air defence system is one of the most advanced in the world
$5 billion missile deal drew sanctions warnings from United States
Washington says the S-400s pose a threat to its Lockheed Martin F-35 fighter jets program
India agreed to buy the S-400 system last year despite US warnings the purchase could trigger sanctions against it
First parts of S-400 air defence system were flown to Murted military airbase, sealing Turkey’s deal with Russia
Two NATO allies have sparred publicly for months over Turkey’s order for Russia’s S-400 air defence system
Washington says the move can adversely affect a separate deal between US and Turkey