LONDON -- A British journalist and her publisher faced defamation claims in a London court on Wednesday from billionaire Chelsea Football Club owner Roman Abramovich and other wealthy Russians over a book about the rise of President Vladimir Putin.Catherine Belton’s book, “Putin’s People: How the KGB Took Back Russia and then Took on the West,” charts the rise to wealth and power of former KGB agent Putin and a circle of associates after the breakup of the Soviet Union.Abramovich says the book’s