This is good news for London, good news for Europe, and bad news for those countries, such as Russia, who were hoping for a splintering Yes result that could weaken Britain and the EU.

The result is good news for England because the referendum led to much-needed soul-searching among the English. They had to consider what it would have meant for their identity and status were Scotland to break away from the UK. An England without Scotland would also have generated an intense discussion in Wales and Northern Ireland, not forgetting Ireland, about the future of their relations with the government in London.

As it is, Cameron has already started that debate. He promised the Scots that if they voted against independence, London would devolve far-reaching political powers to Edinburgh. To honor that pledge, he tasked Lord Smith of Kelvin on September 19 with overseeing the process of devolving more powers to Scotland, even over taxation.

Cameron’s decentralization policies will be watched very closely, not just by the rest of the UK but also by other political movements that are seeking greater freedom from central governments.

In another context, the Scottish “No” vote is a pointer to 2017. That is when the British may vote on whether to remain in the EU, following a referendum pledge that Cameron has made if his Conservative Party is reelected next year.

If Cameron and other British political party leaders could campaign, belatedly, with such vigor and commitment for Scotland to remain in the UK, then surely they could consider doing the same for the UK to remain in the EU.

Scots have chosen to retain the status quo because they believed that remaining together was in their interests—the same argument could be made for Britain to stay in the EU.

Together does mean stronger, despite all the deficiencies of the EU and Cameron’s petty populism and intellectual cowardice in not understanding that Great Britain and Europe would be mutually damaged if the Brits vote to step out of the EU. There are, to be sure, some countries outside Europe that would relish that idea.

This is why the Scottish result places an onus on both London and Brussels to find a modus operandi. Cameron’s constant whining about Europe is not endearing him toward Europeans. Indeed, during the run-up to the Scottish referendum, which received wide coverage across Europe, there was almost a feeling that the Scots should give Cameron a bloody nose with a Yes vote because of his attitude toward Europe.

As it stands, Cameron is lucky. Even though he denied it, his political future would have been in question had he lost Scotland. Now, he has to turn the No vote to Britain and to Europe’s advantage. That means moving the debate away from populist and emotional issues (Cameron: “It would break my heart if Scotland left the United Kingdom,") to strategic questions that were so absent by both sides in the Scottish campaign.

A strategic debate by the British government about its role in Europe, and whether Europe itself has any future as a major global actor, is long overdue. Today’s outcome in Scotland should be the catalyst for starting this conversation. If not, Cameron could squander Britain’s future in the EU, and the Scottish vote.