A crack team of cybernauts will form a rapid response internet “war room” to track and respond aggressively to online rumours that Barack Obama is unpatriotic and a Muslim. As he gears up for his general election fight against John McCain, Mr Obama and his chief advisers are aware of the danger of such rumours, amid polling data showing that a significant number of Americans believe he is a Muslim or are suspicious about his background. Such doubts were a factor in his poor showing with white, blue-collar voters during his primary battle with Hillary Clinton. In recent days Mr...