[Terriergal]

What I'm wondering about is why Cuba exiled these scientists that had all this inside information?

[William Wallace]

What I'm wondering about is why Cuba exiled these scientists that had all this inside information?

They defected.

[Polybius]

What I'm wondering about is why Cuba exiled these scientists that had all this inside information?

Cuba does not "exile" individuals. They exile themselves.

Sometimes by risking their life on a raft. Sometimes by bolting away from the other Cubans at an airport when the group of (scientists/athletes/musicians) are on their way to an international (science conference/athletic meet/music festival).