The Defence Industrial Triptych systematically analyses the components and drivers of the relationships that bind a government to its defence industrial base by examining three major case studies: the UK, US and Germany, who between them account for over three quarters of NATO defence spending. The features of their defence industrial relationships –whether common or unique – provide vital lessons for policy-makers, industrialists and the taxpayer. As defence cuts bite across NATO and as the UK approaches the 2015 Strategic Defence and Security Review, the relationships this Whitehall Paper considers are more important than ever.