Vladimir Putin has revealed his is grandfather in a new documentary by Hollywood director Oliver Stone.

Axar.az reports citing Independent.

The American filmmaker was granted access to the Russian president between 2015 and 2017 and has used his footage to create a series called The Putin Interviews.

At one point he captured Mr Putin meeting his daughters Maria and Yekaterina for lunch.

Asked if he had become a grandfather, the Russian leader replied with a simple: “Yes”.

Stone, who is best known for his feature films like Platoon, Wall Street, and JFK, then pushed Mr Putin.

“Are you a good grandfather? Do you play with [your grandchildren] in the garden?” he asked.

“Very seldom, unfortunately,” Mr Putin answered.

Little is known about his two daughters and Mr Putin gave no additional clues, saying only that they were accomplished women. He did not reveal how many grandchildren he has.

The Russian leader’s daughters, who are both in their 30s, reportedly use their husband’s surnames, going by the names of Yekaterina Tikhonova and Maria Faassen.

It is not known whether they will feature in other parts of the documentary, the first installment of which aired in the US earlier this week.

However, the pair did cover a wide range of topics. Mr Putin revealed that he had floated the idea of Russia joining Nato with former US President Bill Clinton in 2000.

The pair also discussed the country’s treatment of homosexuals.

Mr Putin defended the country's controversial law on banning dissemination to minors of "propaganda" legitimising homosexuality.