Hillary Clinton has become the latest powerful figure to intervene on the independence debate, declaring she would "hate" for Britain to "lose Scotland".
The former US secretary of state said she believes a yes vote would be a "loss for both sides" and she is hoping that it does not happen.
Mrs Clinton, who is on a tour to promote her memoir Hard Choices and is widely believed to be preparing for a presidential run in 2016, also indicated she was keen for Britain to remain part of the European Union.
"I would hate to have you lose Scotland," she told BBC 2's Newsnight.
She added: "I would think it would be a loss for both sides but, again, I don't have a vote."