>>835
もう俺が「教えて上げる」側なんだね。
https://www.defenseworld.net/news/24786/Russian_S_400_System_Requires_Friendly_Aircraft_Data_to_Identify_Friend_or_Foe#.XRIuy4_gqUk

The United States is opposed to Turkey and India acquiring the Russian S-400 long-range air defense systems as
it requires sensitive data from the sensors of the aircraft to be fed into it in order to identify them as friend or a foe.

In a paper titled titled "Understanding why the US doesn’t want India to buy the S400," he said Turkey, a NATO
member state and India, which is America's "major defence partner," have signed Communications Compatibility
and Security Agreement (COMCASA) with the US. This enables them to procure specialised equipment for encrypted
communications for US origin military platforms like the C-17, C-130 and P-8Is; and likely for future platforms like
the 24 MH-70 Romeo anti-submarine helicopters, the Sea Guardian drones, etc.

要は、インドがデータリンクシステムを登載したS400を導入することで、NATO側のデータリンクにロシアが
侵入する可能性があるから米国がインドのS400購入を嫌がってるって書いてます。なぜならばS400はレーダーや
航空機のレーダーに基づいた情報で（要はデータリンクがあるから）何百キロも離れたところから敵を攻撃できるから。

教えてもらったら礼くらいは言えよな。