The Harvard University Professor Joseph Nye talks about changing power in the 21st century – and how whose story wins matters as much as whose army wins.

Most British prime ministers would probably have made the same decision as Tony Blair and followed George W. Bush into war in Iraq in 2003, says the FT's chief foreign affairs commentator.

Heather Brooke's investigative journalism was the catalyst for the MPs expenses scandal of 2009. With an eye to how power corrupts, from Orwell's Animal Farm to an apartheid memoir, she looks at importance of sticking to one's principles and the dangers that arise when we don't

Modern society depends on trust more than we realise, and the basis for that trust is security. The trick, says the security guru, is preserving the forces that allow us to trust one another, while also knowing who not to trust.

From the Hearsts to the Murdochs, powerful families have often controlled the newspapers we read. The author, and Kennedy family member, tells us why they do it and where it leads

Women’s historical role in politics wasn’t always as limited as we might assume. Medieval historian Helen Castor tells us about powerful women in British history and how they were constrained or conspired against.