The crucial variable is not British power but the weakness of Europe.
Under Trump, the United States could turn away from Europe, leaving the continent exposed and vulnerable. So is it the destiny of the UK alone to stand for collective defence, free trade and fair play in a turbulent age?
It would be wrong to hope that either domestic or international checks and balances will constrain Trump abroad. Geopolitically, the result would be unpredictable – at best.
Is full political union of the eurozone the only way to stop the disintegration of Europe after Brexit?
Britain: Leading, Not Leaving argues that Britain's leadership could help Europe became a safer place with a stronger economy.
As a scholar of Churchill, Boris Johnson could have articulated a constructive vision for Britain and Europe. Instead, he wilfully manipulates and distorts the historical record.
The prospect of the break-up of Spain poses yet another challenge to Europe.
Why the real history of the Peace of Westphalia in 17th-century Europe offers a model for bringing stability to the Middle East.
European integration was designed to contain Berlin’s power – instead, it has increased it.