http://ru.krymr.com/content/article/27481520.html
https://www.foreignaffairs.com/articles/united-states/2015-12-14/putins-power-play-syria
http://www.thetimes.co.uk/tto/news/world/middleeast/article4661474.ece
http://newsader.com/16831-nato-gotovitsya-k-oboronitelnoy-voyn/
http://expert.ru/2016/01/7/amerika-rossii-ne-vrag---sopernik/