A clip that shows a Russian Air Force Su-27 Flanker aggressively banking into a U.S. Air Force F-15C Eagle has appeared online. It's not clear where and when the footage was taken but, provided it is genuine (it seems so), it was probably filmed in the Baltic region, when the U.S. Air Force F-15C) were supporting NATO BAP (Baltic Air Policing) mission.

Last time U.S. Air Force supported BAP was during the 45th BAP rotation between August and December 2017.

Here's the video (click this link in case it does not play in the embedded tweet below)