Vladimir Putin has been told NATO missiles will strike deep inside Russia if the Kremlin attempts to attack the Baltics. In a six-word warning to the Russian President, Estonian foreign minister Margus Tsahkna said “we’ll bring the war to Russia” if its forces ever tried to invade.

The Baltic states of Estonia, Latvia and Lithuania are widely seen as the most likely targets if Moscow was to ever decide to launch an attack on NATO. Secretary General Mark Rutte in December warned Russia could attack a NATO member within the next five years. Fears have only risen further after Ukraine’s defence intelligence chief claimed Russia intends to occupy the Baltic states as soon as 2027.

However, Mr Tashkina said any Russian attack would be met with a devastating response.

Speaking to The Telegraph on the sidelines of the Munich Security Conference, he said: “We’ll bring the war to Russia and we’ll have deep strikes very far into Russia. We know exactly what to do.

“That’s why we are now speeding up our investments and developing our capabilities…it’s why we are investing 5% of GDP on defence in our region.”

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All three Baltic states are planning to spend 5% of their national income on defence in 2026.

They are already spending more, in GDP terms, than almost all other NATO nations.

Only neighbouring Poland had a higher defence expenditure as share of GDP in 2025 (4.48%).

Latest figures show Lithuania was estimated to be spending 4%, while Latvia and Estonia were spending 3.73% and 3.38% respectively.

The Estonian border town of Narva has been identified as a potential invasion target by Moscow.

Sir Keir has not confirmed the plans but admitted Britain “must go faster” as concerns grow over the state and size of the UK Armed Forces.