Either way, it is a safe bet that the overall range to a target, say a US aircraft carrier, from the takeoff point of the MiG [now deployed in Syria], is realistically going to be no less than the stated 2,000 km, if not more. This is certainly a game-changer for US naval dominance! Carrier-based aircraft would have no chance to fly far enough from their floating airfield to intercept a MiG31 launching a Kinzhal at 1,000 km or more distance from the ship.
[moonofalabama.org]
This is why the US Navy is developing directed energy weapons for close in defense weapons systems. If the target weapon is traveling faster than the 20mm rounds of a Vulcan multibarrel gatling gun, the current CIWS is not going to do much good. But a laser or maser travels at the speed of light propagated through the air. Nothing is faster than light.
What an act of savagery if Russia sells them to, say, Iran!
They won't.