UK prepares for war: How much will it cost?

The United Kingdom has announced a major investment in defence in response to a “new era of threats” driven by “growing Russian aggression”.

The UK’s Strategic Defence Review (SDR), unveiled on Monday, includes new investments in nuclear warheads, a fleet of new submarines and new munitions factories. Prime Minister Keir Starmer said the SDR would bring the country to “war-fighting readiness”.

“The threat we now face is more serious, more immediate and more unpredictable than at any time since the Cold War,” Starmer said as he delivered the review in Glasgow, Scotland.

The SDR described Russia as an “immediate and pressing” threat, and referred to China as a “sophisticated and persistent challenge”.

European nations have rushed to strengthen their armed forces in recent months, following Trump’s repeated demands that Europe must shoulder more responsibility for its security.

The defence review, the UK’s first since 2021, was led by former NATO Secretary-General George Robertson. Among the 62 recommendations in the SDR, all have been accepted by the government.

Starmer said the measures recommended in the review would bring “fundamental changes” to the armed forces, including “moving to war-fighting readiness”, re-centring a “NATO first” defence posture and accelerating innovation.

“Every part of society, every citizen of this country, has a role to play because we have to recognise that things have changed in the world of today,” he said. “The front line, if you like, is here.”

Based on the recommendations in the review, the government said it would boost stockpiles and weapons production capacity, which could be scaled up if needed.