President Donald Trump spoke with Polish President Karol Nawrocki on Wednesday after Russian drones entered Poland’s airspace during strikes on Ukraine.

“A short while ago, I spoke by phone with U.S. President Donald Trump about the multiple violations of Polish airspace by Russian drones that took place last night,” Nawrocki said.

“The conversation is part of a series of consultations I have been holding with our allies. Today’s talks confirmed allied unity,” he added.

Before the call, Trump remarked: “What’s with Russia violating Poland’s airspace with drones? Here we go!”

Early on Wednesday Poland said it shot down “a dozen or so” drones after an incursion that forced the closure of Warsaw airport, with some aircraft posing a potential threat. Later on Wednesday, the Polish interior ministry said two more drones have been found in Polish territory, bringing the total to 14.

Prime Minister Donald Tusk called the provocation the most serious since World War II, warning it pushed the region closer to open conflict. He said Poland had formally requested urgent NATO consultations under Article 4.

European leaders and NATO Secretary General Mark Rutte immediately condemned Moscow’s actions, while U.S. Ambassador to NATO Matthew Whitaker said Washington would defend “every inch” of NATO territory. Russia’s defense ministry claimed it had not targeted Poland but did not directly deny that drones crossed the border.

Polish Deputy Prime Minister and Foreign Minister Radosław Sikorski said that Russian drones “deliberately targeted” Poland, as he called out “lies and denials” from Russia.

“The Kremlin is again mocking President Trump’s peace efforts,” he said. “Poland, the EU and NATO will not be intimidated, and we will continue stand by the brave people of Ukraine. It’s time for the leadership of Russia to understand that the attempt to rebuild Europe’s last empire is doomed to fail,” he added.