Morawiecki called the Russian mercenary force "extremely dangerous" and said it had been "being redeployed to NATO's eastern flank to destabilize it." He estimated there could be more than 4,000 Wagner members in Belarus.

Morawiecki made the comments with Lithuanian President Gitanas Naused while meeting at the Suwa?ki Gap, a strip of land on the Polish-Lithuanian border that stretches from Belarus to the Russian enclave of Kaliningrad.

The Suwa?ki Gap (Lithuanian-Polish border highlighted in orange)

The two leaders met to discuss the threat they believe Wagner poses to the region.

"Today, the borders of Poland and Lithuania are the borders of the free world that stops the pressure from the despotism from the East," Morawiecki said.

He warned that Wagner could carry out "sabotage actions" and thanked Lithuania for "military cooperation and for the joint promise that we will defend every piece of land of NATO countries."