Preparations for expected U.S.-Iran talks at the Bürgenstock have caused major disruption at Zurich' Kloten Airport.
An urgently introduced no-fly zone around the summit venue is being linked to a technical malfunction that affected radar displays at air traffic control provider Skyguide yesterday morning.
The failure halted all departures from Zurich for more than an hour, disrupting dozens of flights.
Take-offs resumed shortly before 8 a.m., but reduced airspace capacity meant delays continued throughout the morning as authorities worked to restore normal operations.
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