Poland's Secretary of State Marcin Bosacki announced an emergency meeting with the United Nations Security Council on Friday, following an incursion by Russian drones into Polish territory.

Multiple Russian drones crossed into Poland on Wednesday, prompting NATO to send fighter jets to shoot them down and underlining long-held concerns about Russia's three-year war in neighboring Ukraine expanding.

Russia said it did not target Poland and Moscow's ally Belarus said the drones went astray because they were jammed, but European leaders have expressed certainty that the incursions were a deliberate provocation by Russia.

Also Friday, Russia stoked European unease as it launched a long-planned joint military exercise with Belarus aiming to showcase close defense ties between Moscow and Minsk, as well as Russia's military might.

U.S.-led efforts to steer Moscow and Kyiv toward a peace settlement have so far failed to get traction.