In November 2003, Livingstone made headlines for referring to US President George W. Bush as 'the greatest threat to life on this planet,' just before Bush's official visit to the UK. Livingstone also organised an alternative 'Peace Reception' at City Hall 'for everybody who is not George Bush,' with anti-war Vietnam veteran Ron Kovic as the guest of honour. In 2004 he referred to Bush as "the most corrupt American president since Harding in the Twenties". In July 2007 Livingstone suggested that Prime Minister Gordon Brown needed to explain to Bush "that US governments need to return to a realistic view of the world. The US is the world's single most powerful country, but much weaker than the rest of the world put together. The attempt by one country to unilaterally impose itself on the rest of the world is not only undesirable but simply won't work."