Sir Keir Starmer has condemned Russia’s “egregious and unprecedented violation” of Nato airspace after Russia sent drones into Polish territory that were shot down.
Defence Secretary John Healey, meanwhile, said the move took Russia’s aggression to “a new level of hostility” ahead of talks in London with defence officials from Poland, Italy, France and Germany.
Secretary General Mark Rutte said that Nato is “vigilant” and will defend “every inch” of its territory, in a message to Vladimir Putin.
It came three days after Russia’s largest aerial attack on Ukraine since the war began, an assault that hit a key government building in Kyiv for the first time.
Polish defence minister Wladyslaw Kosiniak-Kamysz had been due to attend the meeting of E5 defence ministers at the Royal Artillery Barracks in Woolwich, but flew home early on Wednesday morning to deal with the attack, Mr Healey said.
Polish airspace was violated by multiple Russian drones and those that posed a direct threat were shot down, Polish prime minister Donald Tusk wrote on social media.
Last night the Polish airspace was violated by a huge number of Russian drones. Those drones that posed a direct threat were shot down. I am in constant communication with the Secretary General of NATO and our allies.
— Donald Tusk (@donaldtusk) September 10, 2025
Ukrainian President Volodymyr Zelensky said around two dozen Russian drones may have entered Polish airspace during the night and that his military was working to verify this.
Mr Kamysz had suggested it was more than 10 but did not specify an exact number.
Dutch F-35 fighter jets stationed in Poland under NATO provided support to the Polish air force overnight.
Prime Minister Sir Keir said he had been in touch with Mr Tusk to make clear the UK’s support for Poland and Ukraine, and thanked Nato and Polish forces for their rapid response.
“This morning’s barbaric attack on Ukraine and the egregious and unprecedented violation of Polish and Nato airspace by Russian drones is deeply concerning,” Sir Keir said in a statement.
“This was an extremely reckless move by Russia and only serves to remind us of President Putin’s blatant disregard for peace, and the constant bombardment innocent Ukrainians face every day.”
Sir Keir said the UK and partners will continue to “ramp up the pressure on Putin until there is a just and lasting peace”.
During Prime Minister’s Questions, Sir Keir said support for Ukraine is “unwavering”.
“The attack last night in Poland shows Putin’s belief that he can somehow act with impunity,” he said.
He said there has been “real progress” by his so-called coalition of the willing in recent weeks to ensure security guarantees in a potential Ukraine deal.
Last night in Poland, we saw the most serious European airspace violation by Russia since the war began, and indications suggest it was intentional, not accidental.
I am in contact with @SecGenNATO and @radeksikorski.
The EU stands in full solidarity with Poland. (1/2)
— Kaja Kallas (@kajakallas) September 10, 2025
The Defence Secretary said Russia’s actions were “reckless, unprecedented and dangerous” and said Europe was facing “escalating Russian aggression”.
He said: “Last night Putin took this aggression to a new level of hostility. A violation of Polish airspace deep enough for Warsaw airport to be closed and Nato jets forced directly to shoot down Russia’s drones while, of course, the attacks on Ukraine continue to intensify.
“Poland’s direct defensive military action last night is the first of its kind since Putin launched his illegal invasion in 2022. Minister Kosiniak Kamysz was rightly heading home to Poland very early this morning to deal with this attack.
Putin’s escalation only strengthens our resolve.
Today the Ukraine Defence Contact Group secured £2bn through the UK-led International Fund for Ukraine to deliver priority military equipment to 🇺🇦
We are grateful to Germany’s Defence Minister Boris Pistorius for co-chairing. pic.twitter.com/T7eN4iTnJO
— Ministry of Defence 🇬🇧 (@DefenceHQ) September 9, 2025
“Russia’s actions are reckless, unprecedented and dangerous. We totally condemn these attacks, and we say to President Putin: Your aggression only strengthens the unity between Nato nations.”
Nato chief Mr Rutte said the defence alliance’s council met on Wednesday morning at Poland’s request and that a full assessment of the incident is ongoing.
But he said it is clear that the violation on Tuesday night is “not an isolated incident” and that the situation along Nato’s eastern flank would be monitored, with air defences at the ready.
“Whether it was intentional or not, it is absolutely reckless,” he said.
In a message to Mr Putin, he told the Russian leader to “stop violating allied airspace” and that Nato is “vigilant” and will defend “every inch” of its territory.
European leaders echoed concern that Russia’s actions were part of a pattern of escalation.
European Union foreign policy chief Kaja Kallas called it “the most serious European airspace violation by Russia since the war began” and said it appeared “intentional, not accidental”.
French president Emmanuel Macron said the incursion of Russian drones was “simply unacceptable”.
The talks in Woolwich will focus on what support countries can provide to Poland.
In a message to Russian President Vladimir Putin, Mr Healey said: “Your aggression only strengthens our solidarity to stand with Ukraine. It reminds us that a secure Europe needs a strong, sovereign Ukraine.”
Mr Healey is holding talks with Italian defence minister Guido Crosetto, Poland’s director of international security policy Marcin Kazmierski, French director general for international relations Alice Rufo and German state secretary for armaments Jens Plotner.
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