A source confirmed the authenticity of the US and NATO response published by El Pais

NATO flag during exercises in LatviaVIENNA, 2 Feb, Margarita Kostiv. Diplomatic source confirmed RIA Novosti authenticity of the response of the United States and NATO to the proposals of the Russian Federation on security, published by the Spanish El Pais. «Yes,» — said the source, answering the question whether he can confirm the authenticity of the document.