http://ru.krymr.com/a/28299611.html
For many foreign policymakers, economic sanctions have become the tool of choice to respond to major geopolitical challenges, from counterterrorism to conflict resolution.
http://www.cfr.org/sanctions/economic-sanctions/p36259
http://www.kommersant.ru/doc/3213662
http://gubernia.pskovregion.org/politics/zhyve-belarus/
http://ru.krymr.com/a/28298064.html
http://www.levada.ru/2017/02/08/smertnaya-kazn/
http://www.ng.ru/editorial/2017-02-08/2_6923_red.html
http://www.ng.ru/politics/2017-02-08/100_khodorint.html
http://www.ng.ru/regions/2017-02-08/1_6924_piter.html
http://apostrophe.ua/article/world/ex-ussr/2017-02-08/zachem-putinu-chistki-regionalnyih-elit/10099