Two unidentified drones crashed near the southern Finnish city of Kouvola on Sunday in what the country’s defence ministry believes is a "suspected territorial violation”. ADVERTISEMENT ADVERTISEMENT Finland’s Prime Minister Petteri Orpo says they may have been stray Ukrainian drones. "Drones have strayed into Finland's territory. We take this very seriously," said Defence Minister Antti Hakkanen in a statement, adding that security authorities had been sent to the scene to investigate the