Stefano Domenicali has indicated that talks about engines are progressing in the right way, but admits that the FIA ultimately decides. The head of Formula 1 was asked what extent the FOM was involved in the meetings and whether they could influence the outcome of a return to V8 engines.
Source: [Yahoo Sports](https://sports.yahoo.com/articles/domenicali-sees-talks-f1-engines-060000038.html)