When segments of the Nord Stream gas pipeline linking Russia to Europe mysteriously exploded last September, all eyes were on Moscow, Ian Bremmer tells GZERO World.
But proving a wide held suspicion that Russia was responsible has been a much harder task for European nations.
That's in part due to a long European history of reluctance to share intelligence among member nations.
For a continent that has coalesced around supporting Ukraine during its war, the reluctance to work together on investigating the Nord Stream explosion is raising more than a few eyebrows.