Who is George Soros and why is he saying such awful things? Most Americans do not know this billionaire investor, but, using his vast wealth, he has become a force in left-wing political circles. In some ways, he is the litmus test for Democratic politics. Mr. Soros usually concerns himself with foreign affairs, pointing out what he considers the failures of the Bush administration. In interviews with the press, Mr. Soros claims President Bush's war on terror "is really exploitation." Moreover, he urges European leaders to adopt a stance different from the United States. Writing in the London-based Independent, Mr....