UN Peacekeeping missions have a long history. Although these operations play a vital role in international security, there have been various mistakes and failures associated with them. In today's show, we have Dr Margot Tudor (City University London) explaining the origins of Peacekeeping, what the UN's early objectives looked like in relation to these missions, and what often constrained their effectiveness.

Dr Margot Tudor has just published a book on the early history of Peacekeeping missions, so she is the ideal person to give us an introduction into the history of these operations and their contribution to international security.