A victory for Joe Biden in South Carolina

The former US vice president secures a resounding victory in South Carolina's Democratic primary.

Also in the programme: The UN says thousands of Syrian refugees have massed along Turkey's border with Greece, after President Erdogan threatened to allow them to cross into Europe.

And the US and the Taliban sign a deal to withdraw American troops from Afghanistan, but will this agreement reduce decades of war and violence?

Joining Celia Hatton to discuss these and other issues are Dayo Forster, a Gambian-born writer and international development consultant based in the UK, and Julie Norman, a Teaching Fellow in Politics and International Relations at University College London.

(Image: Democratic presidential candidate, former Vice President Joe Biden, celebrates with his supporters. Credit: Getty Images.)