Claire Cozens Tuesday November 11, 2003 Two of the world's richest men have pledged up to $5m for an anti-George Bush advertising campaign in an effort to oust the US president in next year's presidential election. The international financier George Soros and Peter Lewis, chairman of the US motor insurance firm Progressive Corp, are prepared to spend £3m between them on television ads criticising the president. They have pledged to donate 50 cents for every $1 raised for a planned $10m campaign being put together by the online activists Moveon.org. The organisation, which has already begun broadcasting ads in West...