David Lammy is set to call on the UK's Nato allies to increase defence spending to make the alliance "stronger, fairer and more lethal".
The Foreign Office said the Foreign Secretary will tell allies at a meeting of Nato foreign ministers in Brussels on Thursday that boosting defence spending is the collective duty of Nato members to improve safety in the face of long-term and interconnected threats from Russia and its enablers.
It comes after the UK announced the largest sustained increase to defence spending since the Cold War, hitting 2.5% from April 2027 and rising to 3% in the next parliament - an increase of £11.8 billion.
Mr Lammy said: "Keeping our country safe is the Government's first duty, and NATO is the cornerstone of our security, both at home and abroad.
"That's why we have announced the biggest investment to defence spending since the Cold War.
"Allies must spend more, produce more and deliver more on defence so NATO can become stronger, fairer and more lethal - boosting our collective defence ensures that NATO is ready for the threats and challenges we face."
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