In the first major foreign policy speech since taking office a month ago, Prime Minister Rishi Sunak acknowledged Britain's international responsibility.
The country must "do more to defend its values of freedom and openness on the world stage," said a keynote speech, excerpted by Downing Street, that Sunak will deliver at the annual Lord Mayor's banquet in London on Monday.
"Freedom and openness have always been the strongest forces of progress," it says.
But they were "never achieved by standing still".
A stronger economy must be created "because it is the basis of our strength abroad," it said.
At the beginning of November, Sunak visited Kyiv to offer Ukraine further military aid in defense against Russia.
He also assured Ukrainian President Volodymyr Zelenskyy of his country's "permanent support".
Great Britain is currently struggling with significant economic problems and high inflation.
In mid-November, when the government in London presented its budget plans, the main factors for this were the effects of the corona pandemic and the "energy crisis triggered by Russia".