The announcement comes as the British government presents a review of the defense.
The threat we are now facing is more serious, more immediate, and more unpredictable than ever since the Cold War, says Prime Minister Keir Starmer on Monday.
In the review, the UK is deemed to have entered a "new era of threats".
We are facing war in Europe, new nuclear risks, daily cyber attacks, growing Russian aggression in our waters, threats to our airspace, he says.
Starmer's government has decided to increase defense spending to 2.5 percent of GDP by 2027, and then aims to increase to 3 percent.
To finance the expenditures, the country is reducing its foreign aid.
