Flights across Greece were grounded after a collapse of radio frequencies crippled air-traffic communication, stranding thousands of travelers and bringing airport operations to a halt. #News #Reuters #Newsfeed #world #Europe #Greece #flights #airport #radio Read the story here: https://reut.rs/4q7Iwlf 👉 Subscribe: http://smarturl.it/reuterssubscribe Keep up with the latest news from around the world: https://www.reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow

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