A report published by The Washington Post on Monday revealed how the CIA has supported covert Ukrainian attacks inside Russia, including the killing of Darya Dugina, daughter of the prominent Russian philosopher Alexander Dugin.

The report said the killing of Dugina was carried out by the Security Service of Ukraine (SBU) and that it was one of many operations inside Russian territory involving special units the CIA helped form in the wake of the 2014 coup in Kyiv that ousted former Ukrainian President Viktor Yanukovych.

The report reads: "The missions have involved elite teams of Ukrainian operatives drawn from directorates that were formed, trained, and equipped in close partnership with the CIA, according to current and former Ukrainian and US officials. Since 2015, the CIA has spent tens of millions of dollars to transform Ukraine's Soviet-formed services into potent allies against Moscow, officials said."

The CIA support since 2015 has included advanced surveillance systems, training both inside Ukraine and inside the US, the building of new headquarters for Ukraine's military intelligence agency, and intelligence sharing thought unimaginable pre-2014. Officials told the Post that the CIA still maintains a significant presence in Kyiv to this day.

The CIA helped the SBU form a new unit known as the "Fifth Directorate." Recruits for the new unit were trained by the CIA outside of Kyiv with the purpose of forming groups "capable of operating behind front lines and working as covert groups."

The CIA also gave major support to Ukraine's military intelligence agency, known as the GUR. "We calculated that GUR was a smaller and more nimble organization where we could have more impact," a former US intelligence official who worked in Ukraine told the Post. "GUR was our little baby. We gave them all new equipment and training."