Scotland's leader says Cameron 'living on borrowed time,' won't rule out new independence vote

A year after Scottish voters chose to remain in the United Kingdom, Scotland's leader says it would be wrong to rule out another independence referendum.

First Minister Nicola Sturgeon says the British government is "living on borrowed time" if it does not give Scotland more autonomy.

Sturgeon said Friday that her pro-independence Scottish Nationalist Party respected the result of the vote, which was 55 percent to 45 percent against separation. She said "it would be wrong to propose another referendum without a fundamental change of circumstances."

But she said that if Britain voted to leave the European Union in an upcoming referendum, "demand for a second independence referendum could well be unstoppable."

And she accused Prime Minister David Cameron of failing to deliver on promises to the Scottish people.