http://www.ng.ru/cis/2015-12-30/6_sng.html
Top officials have warned that the United States’ depth of knowledge and capacity for collecting information on Russia is not up to snuff.
http://sanctions.zn.ua/summation
http://www.inopressa.ru/article/29Dec2015/sueddeutsche/sanktionspolitik.html
http://inosmi.ru/politic/20151229/234942622.html
http://inosmi.ru/politic/20151229/234943582.html
http://www.gazeta.ru/business/2015/12/27/7995287.shtml