[4] In 1971-1974 he studied at the graduate school of Sofia University, where he defended thesis for the degree of Candidate of Historical Sciences on the topic "The participation of Bulgarian political emigrants in the construction of socialism in the Soviet Union (1921-1941)".

[6] From 1988 to 1993, he used the pseudonym Oleg Alekseev in Literaturnaya Rossiya (Russian: «Литературная Россия» или «ЛитРоссии») articles.

[6] Beginning in March 1995, he became a parishioner at Novospassky Stavropegic Monastery in Russia as an assistant vicar to Archbishop Alexy (Frolov) and from 2004-2010 he headed its board of trustees, which later grew into the Heritage Charitable Foundation.

[6] At the end of his service he held the post of the head of Analysis & Information department of the Russian SVR with the rank of Lieutenant-General.

[12][13] As of January 2017, he is the chairman of the supervisory board of Tsargrad TV,[6] which is a "Russian Orthodox" TV channel that began broadcasting on 12 April 2015, has a very anti-western geopolitical stance, and is associated with Konstantin Malofeev and both Alex Jones, who appears frequently on Tsargrad TV to prominently support Alexander Dugin, and former Fox News news director from 1996 to 2011 and Fox News co-founder John "Jack" Hanick (Russian: Джек Хэник), who moved to Moscow in 2013 to help Malofeev launch the channel.

[14][15][16][17][18][19][20][21] Through Reshetnikov and Malofeev, Hanick is close to the pro Russia former Greek defense minister Panos Kammenos and Vladimir Putin.

[21] Putin stronly supports Tsargrad TV which according to Malofeev is the Russian equivalent to Fox News.

[9][21][a] In November 2016, he initiated the creation of the "Double-headed Eagle" Society (Russian: Общество «Двуглавый Орёл»), which supports the development of Russian historical enlightenment in Russia, and after the formation of this orthodox-monarchist organization in 2018, joined its leadership and was deputy chairman from November 2017 - July 2020.

He is the president of the Non-profit Charitable Foundation "Heritage" ("Russian Lemnos") and a member of the editorial board of the magazine "Rodina".

[6] One of his daughters, Elena Reshetnikova, supervises the project "Children's Camp on the Island of Lemnos", organized by the "Heritage".