"In order for Cuba to become not only a political but also an economic project, it is necessary to change the legislation there in a way to make it preferential for Russian investors," Osmakov told the Russian lower house.
This "project" will also require long-term financing and a facility to make it possible for Cubans to get revenue in rubles, the Russian official said, pointing out that this was an approach suitable for all "difficult markets."
"It is a kind of a triple project, which we will head to put together in May," he added.
In November, Russian President Vladimir Putin met with Cuban President Miguel Diaz-Canel in Moscow to discuss various areas of bilateral cooperation.
The 19th session of the Russian-Cuban interdepartmental commission on cooperation in trade, economy, science and technology ended in November with an agreement on cooperation in higher education.
In January, the Cuban president met with a delegation of Russian entrepreneurs in Havana to follow up on agreements reached during his November visit to Moscow.