Britain will invest almost £300 billion in its armed forces over the next four years, with Keir Starmer, the Prime Minister saying the country must strengthen its military as global security threats continue to grow.

The announcement, made on Tuesday, marks one of the biggest increases in British defence spending since the end of the Cold War. The package will raise the country’s defence budget by an additional £15 billion, taking total planned spending to almost £300 billion over the next four years.

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The investment plan comes as Britain faces mounting pressure to modernise its armed forces amid growing concerns over Russia, rapid advances in military technology and calls from the United States for European allies to shoulder more of NATO’s defence burden.

“Last year I made the decision in the national interest to reprioritise aid spending towards defence and achieved the biggest uplift in defence spending since the end of the Cold War,” Starmer said.