As Russia’s brutal war with Ukraine enters its fourth month, Edward Stourton asks who Russia's allies and friends are and looks at the nation's influence overseas.

While President Putin has made no secret of his belief that Ukraine should be part of a “greater Russia”, what is less apparent is how far Russia’s influence is spreading in other parts of the world.

These include sub-Saharan Africa, Latin America and the Middle East. With the West having left a vacuum in parts of Africa, President Putin has been able to offer military help in unstable countries such as Mali and the Central African Republic.

This follows Russia's intervention in Syria's civil war on the side of Bashar Al-Assad's government, with implications for the wider geopolitics of the region.

And in Latin America, Russia is accused of using soft power tactics through its media channels to polarise society and spread anti-US and anti-Western propaganda.

Edward Stourton asks to what extent this shows that Russia is trying to rebuild the old Soviet-US spheres of influence of the Cold War.

Producer: Caroline Bayley