What's the truth to the Rafale-Ambani angle?

Rebutting the allegations levelled by Congress president Rahul Gandhi that the joint venture between Dassault and Reliance Defence was okayed by the Centre despite the latter not having sufficient expertise in defence manufacturing, Anil Ambani wrote a detailed letter explaining the rationale behind the contract.

In the letter Ambani claims that the joint venture is independent agreement between two private entities and that the government does not have any role in this.