BlackBerry phones and Spot the dog

Max Pearson presents a collection of the week's Witness History interviews from the BBC World Service. Our guest is Jacquie McNish, author and former Senior Correspondent at the Wall Street Journal.

We start with the former co-CEO of BlackBerry, who recounts the company's remarkable boom and bust.

Then, the creation of the Spot the dog children's books in the 1970s.

We hear the testimony of a US soldier who defected to the Soviet Bloc in the 1950s.

An author recalls how her 2010 book challenged Norway's immigration policy.

The inside...