http://nv.ua/opinion/novoprudskiy/putinym-kljanus-1288794.html
http://7days.us/vitalij-portnikov-rossijskoe-delo-bibliotekarej
https://day.kyiv.ua/ru/blog/politika/sprosite-lyubu
http://www.rosbalt.ru/blogs/2017/06/09/1622284.html
https://www.gazeta.ru/army/2017/06/08/10713635.shtml
http://www.ng.ru/politics/2017-06-08/1_7005_chayka.html
Claim made in interview with film-maker Oliver Stone, who was granted rare access to Russian president over two years
https://www.wsj.com/articles/feeling-abandoned-russian-catholics-appeal-to-the-pope-1496827805