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Major broadcasters in Ireland and Bulgaria were evacuated following emailed bomb threats, as authorities across Europe investigate a series of disruptive hoaxes.
An Austrian Airlines flight bound for Vienna from Tel Aviv diverted to the Bulgarian capital on Sunday following a mid-air bomb threat.
A series of drone attacks targeting commercial shipping off the coast of Bulgaria has led to the sinking of one vessel and significant damage to another, raising fresh alarms regarding security in the...
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