For example, Alejandro Alonso, one of the Cuban spies, was recently sentenced to only 7 years. Compare and contrast this to the life sentence without parole that Jonathan Pollard received for espionage on behalf of Israel - America's strong friend and close ally.
To better understand the seriousness of the Cuban Spy case, the following excerpt from the Congressional Record is an excellent primer. The speaker is Senator Jesse Helms:
Clinton Administration Must Respond Forcefully To Cuban Espionage