A MiG-21 fighter — a leftover monument from the Soviet era — is the centerpiece of the Aviators Neighborhood in Deveselu, Romania. Now the base has become a U.S. Navy facility that is part of NATO's anti-missile shield for Europe. Gabriel Amza for NPR hide caption

Soraya Sarhaddi Nelson
Soraya Sarhaddi Nelson is a NPR foreign correspondent based in Cairo.To Defend NATO, U.S. Sets Up Missile Defense Systems In Eastern Europe
The Belgian flag flies at half-mast at the Koningin Astrid-Reine Astrid military hospital in Brussels on March 24, 2016. Some of the people wounded in the Brussels attacks are being treated there. Patrik Stollarz/AFP/Getty Images hide caption
Belgian Authorities Continue Search For Key Suspect In Brussels Attacks
Investigators Ask Public To Help Identify Possible Suspect In Belgium Attacks
Tina Buechner da Costa (left) hopes to become Germany's female astronaut. Claudia Kessler (right), CEO of HE Space, is organizing a campaign to send the first German woman into space. Soraya Sarhaddi Nelson/NPR hide caption