Corruption long was a taboo subject. Bribes in some countries were tax-deductible. That mindset changed when Peter, having seen the untold damage it was doing, especially in his earlier work in development, founded and built up Transparency International.
Transparency built chapters in almost every country. It drew in engaged government, the citizen sector, and business. It turned on a giant spotlight. Its regular surveys of perceived levels of corruption in each country and then its ranking of countries from the least to the most corrupt draws enormous global attention every year. And it affects a myriad of decisions, not least investment flows.