Via a Bill Gertz column:
A Russia Su-27 jet fighter flew dangerously close and nearly collided with a U.S. reconnaissance aircraft this week in the latest aerial provocation by Moscow, defense officials revealed to the Washington Free Beacon. The Su-27 conducted the close-in intercept of an RC-135 reconnaissance aircraft in international airspace over the Baltic Sea on Tuesday,
Link:http://freebeacon.com/national-secur...t-over-europe/

I recall a Russian plane approached a RC-135 in late 2014, which to "escape" flew into Swedish airspace uninvited, probaly posted here.