KEY POINTS
  • Britain as a whole voted in 2016 to leave the European Union but Scotland voted to remain.
  • British Prime Minister Boris Johnson has said it would be "totally wrong" to hold another referendum.
First Minister of Scotland Nicola Sturgeon after delivering her keynote speech during the SNP autumn conference at the Event Complex in Aberdeen. (Photo by Jane Barlow/PA Images via Getty Images)

Scotland must hold another independence referendum in 2020 and will soon request the powers needed to hold it legally, Scottish National Party (SNP) leader Nicola Sturgeon said on Tuesday.

Scots rejected independence in a referendum in 2014 but the SNP says that Britain's vote to leave the European Union fundamentally changes its constitutional arrangements and means that the independence question should be revisited.