The largest submarine hunt in Swedish waters since the end of the Cold War.
A near collision between a Russian military plane and a Swedish passenger aircraft carrying 132 people, reports GHN based on CNN.
And the abduction of an Estonian official from the territory of the NATO member, only days after U.S. President Barack Obama visited the Baltic nation.
Any of these three incidents could have led to direct military confrontation between Russia and the West, a new report suggests -- and they have all taken place within the past nine months.
The incidents are outlined in "Dangerous Brinkmanship," an analysis that lists more than 40 "close military encounters between Russia and the West" that took place in the eight months from March to October of this year.
The report, by the European Leadership Network, classifies the submarine search, airline near collision and Estonian abduction as "high-risk incidents."
It categorizes 11 other events as "serious" and suggests they could have escalated.
Most of them involve Russian aircraft threatening NATO or its allies.
They include what appears to have been a mock attack on the Danish island of Bornholm, as well as Russian aircraft making passes at a U.S. Navy warship and a Canadian frigate, and several different incidents between Russian and Swedish planes.