At the heart of Fifa is a lesson about tackling corruption that goes far deeper. Corruption at Fifa was not a surprise. For years it lined the pockets of those on the inside and was met with little more than a reluctant sigh. The world shied away from taking on the problem, until some brave British journalists and American lawyers showed that things really could change. The same is true of corruption the world over... World leaders simply cannot dodge this issue any longer. We have to show some of the same courage that exposed Fifa and break the taboo on talking about corruption. I will start tomorrow at the G7 in Germany and I will put corruption at the heart of my agenda at the United Nations in September and the G20 in Turkey, culminating with a major anti-corruption Summit in London next year.