The dominance of the US dollar

For over 80 years the US dollar has been king when it comes to global trade, is that beginning to change?

We look at how the US dollar came to dominate global trade, ask what happens when a country runs out of dollars and explore why countries like China, India and Russia are starting to increase trade in their local currencies.

Presenter / producer: Devina Gupta Image: US dollars; Credit: Getty Images