Historical dispute threatens Poland's arms aid to Ukraine

A promised exchange of MiG fighter jets for modern drone technology has stalled, and future Polish arms transfers are in doubt following a bitter dispute rooted in World War Two history. Ukrainian President Volodymyr Zelenskyy's decision to grant an honorary title to a military unit linked to the Ukrainian Insurgent Army (UPA) has triggered a severe rupture with Warsaw. The UPA was instrumental in the killing of up to 100,000 Polish civilians during the war.

Attempts to contain the fallout failed at this week's NATO summit in Ankara. "There has been a lot of tension in Polish-Ukrainian relations recently," Polish President Karol Nawrocki told journalists. "We have not managed to resolve historical issues." Nawrocki declared the glorification of the UPA "nonnegotiable" and openly questioned Ukraine's fitness to join the European Union.

The historical row has collided with Polish domestic politics, turning military aid into a partisan liability. Opposition leader Krzysztof Bosak accused Prime Minister Donald Tusk's government of secretly transferring Patriot interceptor missiles to Kyiv. "In March, hidden from the Sejm, the government handed over expensive and hard-to-obtain interceptor missiles for Patriot systems," Bosak wrote on X.

This political shift threatens Europe's defense supply lines. Since 2022, Poland has spent €3.8 billion on military equipment for Ukraine, acting as a critical logistics hub for the continent. Former foreign policy official Marcin Przydacz warned that Poland gave up its place in the US weapons queue for the Patriot transfers, meaning "Poles will now have to wait longer" for critical air defenses.

The economic cost of the diplomatic rupture is already visible. Warsaw had agreed to supply MiG fighters to Ukraine late last year in exchange for advanced drone technology. That swap is now frozen because Kyiv demanded the jets be modernized before delivery, a condition Defense Minister Wladyslaw Kosiniak-Kamysz refused.

The dispute marks a sharp reversal in Polish politics, where parties previously competed to prove their support for Kyiv. Even former Prime Minister Mateusz Morawiecki, who oversaw the bulk of the aid package, defended the past transfers as a sound strategic transaction. "That was the deal: We supply you with 50-year-old tanks and you fight and shed your own blood," he said. "I think that was a good deal for us."

Tensions are expected to peak on Saturday, Poland's national day of remembrance for the 1943 Volhynia massacre. Zelenskyy’s chief of staff, Kyrylo Budanov, predicted an imminent escalation. "Information I have indicates that the Polish side is preparing actions that will lead to escalation," he said.

The European Parliament has intervened, passing a resolution on Wednesday that labeled Zelenskyy's UPA honor an unnecessary escalation. Lawmakers called the move incompatible with EU values but urged both nations to resume reconciliation.