1: On Tuesday , a U.S . RC-135U was flying over the Baltic Sea when it was intercepted by a Russian SU-27 Flanker . 2: The Pentagon said the incident occurred in international airspace north of Poland . 3: The incident occurred on April 7 north of Poland in the Baltic Sea .
1: a U.S . RC-135U was flying over the Baltic Sea when it was intercepted by a Russian SU-27 Flanker 2: the incident 3: The incident