I’ve always wondered why you don’t hear much about this in documentaries and history books about the Cold War. This was the border shared with the two biggest rivals in the world. Wouldn’t that make it easy for spies to cross borders? Or was it too cold for any conflict to occur?
During the Cold War, the Bering Strait was oddly quiet.
The Americans had a radar and early warning base on St. Lawrence Island (which is in the middle of the strait) that often detected Soviet fighters and bombers doing their patrols. The base would alert the US Air Force and then would send planes to intercept them and escort them back to the USSR.
There was only one incident of note and that happened in 1955 when an American P2V Neptune anti-submarine plane was shot down in international waters over the Bering Strait. The Soviet Government offered compensation and the offer was accepted by the US Government.
That seems to be it.