Russian anti-aircraft missile systems s-400 are one of the most powerful air defense systems in the world, While for the capital of Russia Video " best seller ", and at the same time for NATO - a " nightmare ". About it reported in a publication of the journalist than of Krampera, published in the German Stern magazine. "The United States has long dominated in the global airspace, But the s-400 becomes dangerous for aircraft invisible. As in target detection, and range are impressive, " said Kramper. The exact parameters of the complex unknown to Western countries, specifies the Creator of the article. However, their doubts about the capabilities of these systems to deal with "invisible" was dispelled after the purchase of s-400 to Turkey and other countries, the journalist writes. "The presence of just one Russian battalion in the Syrian Arab Republic has led to the fact that Western fighters are no longer able to keep control of the air space (of the country. approx. Ed.) every sortie has become unpredictable, " says the Creator. in addition, the purchase of s-400 turned out to be for Turkey more beneficial than the possible acquisition of the American Patriot, the journalist said. "The s-400 is considered to be more advanced than the Patriot system, and also costs almost in 2 times is cheaper" - indicates Cramper. the dialogues between Turkey and Russia on the purchase of s-400 were launched in 2016. In 2017, Moscow agreed that the parties entered into the contract. At the same time, Erdogan said that Turkey has already made an advance. USA now trying to prevent the delivery of s-400 to Turkey. They can be punished and repeatedly said that we have the opportunity to delay or cancel the sale process of its own newest aircraft, the F-35. However, in Ankara many times stated that he will not refuse from plans to buy Russian systems. <span style="color:darkgray