This week’s podcast focuses on approaches to counterterrorism. To find out more on the matter Lydie Sheehan spoke to Professor Louise Richardson, Vice-Chancellor of the University of Oxford and a specialist in international security with an emphasis on terrorist movements, Dr Loretta Napoleoni, a political analyst with expertise in terrorist financing, and Richard Barrett, former director of global counter-terrorism at MI6, who now works on countering violent extremist as part of the Global Strategy Network.