By Lisa Barrington and Joanna Plucinska

SEOUL/FRANKFURT (Reuters) -The incursion of Russian drones in Poland has reignited safety concerns over the vulnerability of civil air transport in Europe, aviation and insurance experts said, the latest upheaval facing airlines from escalating global conflict.

Early on Wednesday, Poland shot down drones in its airspace with the backing of military aircraft from its NATO allies, the first time a member of the Western military alliance is known to have fired shots during Russia’s war in Ukraine.

Warsaw Chopin and Modlin airports, as well as Rzeszow and Lublin airports in the country’s east, temporarily closed before resuming operations.

Countries bordering on Ukraine have reported occasional Russian missiles or drones entering their airspace since

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