Tusk did not provide any further details about the nature of the threat or which of the 18 border crossings between Poland and Ukraine was affected.
The prime minister added that the incident was just a taste of what is to come and noted he had received a “fairly precise report” from the CIA regarding possible events in the coming months.
“We must anticipate various scenarios; both Poland and all of Europe need to be prepared for different possibilities concerning the situation not only on the Russian-Ukrainian front but also along the EU’s eastern flank.”
The incident at the border crossing between Moldova and Ukraine’s Odesa region left two people dead, causing President Maia Sandu to call for further European air defense support for Ukraine.
Russia also struck a Moldova-Ukraine border crossing in August.
“As you know, Russia has already resorted to provocative attacks on border crossings—for instance, in Moldova. We expect similar actions targeting border crossings with Ukraine in other countries, including Poland,” said Tusk.