Polish-supplied tanks are being used by Ukraine in its offensive in the Kursk region, president Andrzej Duda has confirmed.
"We are touched to see how the PT-91 Twardy tanks, given by Poland [to Ukraine] more than one year ago, are defending today Ukraine on the battlefields, fighting in the Kursk region," he said.
Vladimir Putin has vowed a "worthy response" to any use of Western weapons in the invasion.