(ANSA) - BELGRADE, SEP 5 - In an open letter to the G20, nearly 300 millionaires, economists, and political leaders from nearly all G20 countries called for a new international agreement on wealth taxes to "prevent extreme wealth from corroding our collective future." It claims that people all over the world are "desperate for change." Signatories include Disney heiress and philanthropist Abigail Disney, ex-leaders of Romania, Croatia, Czech Republic, and Bulgaria, US Senator for Vermont Bernie Sanders, US Representative Brendan Boyle, former and current European parliamentarians such as Aurore Lalucq, artists Brian Eno and Richard Curtis, and economists such as Gabriel Zucman, Jayati Ghosh, Kate Raworth, Jason Hickel (ANSA).