In 2007 , having been accused of being behind cyberattacks on Estonian government 's systems , Markov was declared persona non grata in Estonia and in 2008 he was also expelled from Ukraine . In late 2009 , Markov said that he believes the Russian Black Sea Fleet should stay stationed in Ukraine " for the next 100 years " because he believes " It is the guarantor of security in the entire region . " In November 2016 , following the election of Donald Trump in the United States , Markov dismissed alleged Russian interference in the presidential election , though he said " maybe we helped a bit with WikiLeaks . " Markov has criticized historians from states formerly under Soviet occupation , claiming they distort the historical record with the documentation of events like the Katyn massacre . In early May 2010 Markov demanded a " radical " change in Ukrainian textbooks about the history of Ukraine . He stated Ukrainian history textbooks can not be considered an internal affair of Ukraine , as they often displayed a negative attitude to Russia . On May 13 , 2010 education minister of Ukraine Dmytro Tabachnyk announced that Ukraine and Russia intend to develop a common textbook for history teachers
Katyn massacre
Katyn massacre
Sergey Alexandrovich Markov