Britain has finally grasped the nettle on defence, but tough choices lie ahead

The new PM must balance the security budget and other urgent spending priorities, with little room for manoeuvre

Keir Starmer's defence investment plan leaves behind spending problems that his successor will not be able to avoid.

Military budgets will be well short of the UK's Nato commitments by the end of the decade, and European allies and a combustible White House are likely to notice.