Britain's Prime Minister David Cameron is due to meet the leader of Scotland's separatist administration to sign a deal on a referendum that could break up the United Kingdom.
Officials from London and Edinburgh have been meeting for weeks to hammer out details of a vote on Scottish independence. Sticking points included the date and the wording of the question.
Cameron will meet Scottish First Minister Alex Salmond in Edinburgh Monday to sign the deal, which is likely to call for a referendum in October 2014, as Salmond's nationalists had desired.
Cameron and other pro-union politicians had pressed for the vote to be held earlier, because opinion polls show that only between a quarter and a third of Scots currently favor leaving the union.