This question arises from a recent report by the Foundation for Political Innovation (Fondapol) in Paris. Fondapol's director, Dominique Reynié, said in a recent interview:

"We have found Gazprom funding in particular environmental NGOs, which furnished certain European countries with ministers -- Belgium for example -- who then evidently embarked on a sort of return of favor by defending an exit from nuclear power."

These allegations are not new.

The Guardian, already in 2014, quoted NATO's then Secretary General Anders Fogh Rasmussen, making the following accusation:

"I have met allies who can report that Russia, as part of their sophisticated information and disinformation operations, engaged actively with so-called non-governmental organisations - environmental organisations working against shale gas - to maintain European dependence on imported Russian gas."