US spy planes caught circling over Ukraine on flight tracker as Russia readies for invasion
Flightradar24 on Twitter: "2 x US Air Force B52 that arrived in Europe last week, can now be spotted flying over Sweden https://t.co/OXmk7w2sTM https://t.co/qqu6CO298B https://t.co/W4qHhEjFTN" / Twitter
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