More unidentified drones were spotted in Europe on Thursday night, disrupting flight services at Germany's second largest airport, in Munich. Belgian defense officials are also investigating sightings ...

Analysts say Kleine Brogel is one of a handful of European military bases hosting U.S. tactical weapons, an estimated 10 to 15 B-61 nuclear bombs that can be dropped from nuclear-capable F-16 jets.

Denmark on Saturday reported more mysterious drone sightings — this time over military installations, including its largest military base — after incursions at airports grounded flights this week. The ...