S-400

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

The US presses against it accusing Russia of trying to muddy the waters in a key, volatile region

Raises questions among NATO allies

Turkey’s purchase of the missile systems unnerves US and NATO member countries

When deployed along the border with Pakistan, the system will provide India with 600kms radar coverage