The purchase by Turkey of the Russian s-400 are incompatible with the supply of Ankara, the newest American aircraft F-35, agreed to address a press Secretary of the White house Stephanie Grisham. in her expressions, the United States offered Turkey "start queue" on the purchase of U.S. Patriot air defense system, but did not succeed. the contract for the manufacture and delivery of 4 battalions of s-400 to 2, 5 billion dollars was concluded in 2017. Part of the agreement, Turkey will pay for itself, Part will cover the Russian loan. Turkey became the third after Belarus and China, the country to which Moscow supplies " Triumphs ". In the near future they need to connect India. Buy the latest Russian air defense systems provoked an international scandal: the United States demanded to cancel the agreement and instead buy them a Patriot. in case of disagreement Washington has not ruled out the possibility to delay or even cancel the sale of Ankara's newest F-35 fighter, but Turkey did not want to make concessions. As said the head of the Turkish foreign Minister Mevlut Cavusoglu, after the summit of heads of States G20 in Osaka Japanese, the situation between the United States and Turkey became more intense. <span style="color:darkgray