Jonathan Powell, the UK’s National Security Adviser, is used to operating behind the scenes: he’s spent decades working as a diplomat, negotiator and mediator. Recent events in the US and Ukraine have thrust him into the spotlight. After the fiery Oval Office meeting between President Trump and Volodymyr Zelensky, Powell has been credited with advising Ukraine and ensuring that lines of communication were kept open. He travelled to Kyiv to meet Zelensky and played a key role in fashioning a plan for a ceasefire and the steps that might follow.

Powell began his career in the foreign office before becoming Tony Blair’s chief of staff. He was crucial to the negotiations that led to the Good Friday Agreement which helped bring peace to Northern Ireland. Since then, he’s worked on resolving conflicts and crises all over the world in places like Colombia, Mozambique and Libya.

Mark Coles talks to his friends, family and former colleagues to find out how this veteran negotiator became one of the most important figures shaping British foreign policy.

Presenter: Mark Coles