But while the S-400 could not become part of Nato's shared air and missile defenses, he said, Turkey has aircraft and radars that would remain part of the system.
"The S-400, the Russian air defense system, it's not possible to integrate into the integrated Nato air defence and missile system, which is about sharing, you know, radar picture, about joint air policing, which is about shared capabilities. And Turkey has not asked for that," Stoltenberg said.
Reasons for US furious reaction!
The Irish journalist, Finian Cunningham, says the furious reaction in Washington to Turkey's receipt of the Russian S-400 air defense system is motivated by several factors all of which spell a heavy blow to US strategic interests.
It is a blow to America's prestige and presumed power to make lesser nations buckle under its domineering demands, he says adding:
"The way is now open for other countries to follow Turkey's lead in ordering the Russian defence system. S-400 deals are reportedly being lined up for India and others who will be encouraged by Turkey's defiance of Washington's reproaches.
"It has long been suspected by independent aviation experts that the American F-35 is over-rated and vastly over-priced. One jet costs twice as much as an F-16 to buy yet the supposed "latest generation" fighter jet has been dogged with technical problems and doubts over its performance.
"Furthermore, if other nations follow suit and likewise buy Russia's S-400, then the US will be compelled, in turn, to cancel more potential orders for the F-35. Given that the development cost for the aircraft is estimated to run into trillions of dollars, the prospect of dwindling sales to other countries is a gloomy one, if not financially disastrous for the US federal government and Pentagon contractors."
There's another strategic factor why Washington is reacting furiously to Turkey's S-400 contract, Cunningham argues: "Turkey is the second-largest military force in the US-led NATO alliance. For Ankara to solidify this massive defense deal with Russia that move totally undermines all the Washington and transatlantic propaganda which seeks to portray Russia as an existential threat to the US and Europe. The real, unstated, purpose of NATO is to prolong the Cold War demonization of Moscow as some kind of "malign power". If NATO member Turkey trusts Russia to provide it with air defenses, then the whole NATO charade of demonizing Moscow collapses."
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