How reliant is the world on Russia for oil and gas?

The US, UK and EU have announced that they will restrict Russian oil and gas imports.

The move came after Russia warned it could cut off gas supplies to European countries if an oil ban were to go ahead.

What sanctions are there on Russian oil and gas?

The US has announced a complete ban on Russian oil, gas and coal imports, after Ukraine called for sanctions to be expanded.

The UK is to phase out Russian oil by the end of the year, and the EU is reducing its Russian gas...