The photo from www.flightradar24.com, posted by a Twitter user, shows the path of the American Boeing RC-135 reconnaissance aircraft used by NATO. The photo clearly shows that the plane made a full circle over Kaliningrad Oblast, and also flew over Poland and Lithuania.

Boeing RC-135, or tracking data

On Saturday, the Russians conducted exercises over the Baltic Sea with SU-27 fighters. It was intended to repel a mock attack on the Kaliningrad Oblast. The exercises took place two days after Finland announced its plans to apply for NATO membership. So it is possible that NATO sent a Boeing RC-135 to monitor the actions of the Russians.

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