https://www.radiosvoboda.org/a/news-us-taylor-russia-sanctions/30340526.html
https://ru.krymr.com/a/ssha-nikogda-ne-priznayut-anneksiyu-kryma-amerikanskij-general/30339726.html
https://www.inopressa.ru/article/23Dec2019/nytimes/gebrev.html
http://www.ng.ru/vision/2019-12-23/6_7759_vision.html
http://www.ng.ru/world/2019-12-23/6_7759_subbotin.html
https://www.nytimes.com/2019/12/22/world/europe/bulgaria-russia-assassination-squad.html