HAVANA (Reuters) – Three Cubans are facing up to 30 years in jail for anti-government propaganda and violence, state-run media said, in attacks authorities allege were funded from outside Cuba and aimed to destabilize the island’s government. Prosecutors were seeking between 20 and 30 years of prison time for a man and two women who allegedly threw petrol bombs at a building that houses case files for a central Havana courthouse, the newscast reported late on Sunday. The report said the trio had also attacked the Havana provincial headquarters for neighborhood block committees, or CDRs, which …