Original sentence: After three days he attempted to come back to Poland but was caught and deported from the airport in Warsaw to Vienna.At the end of April, 1988 he was blackmailed by the communist authorities (who at the time were trying to get rid of "difficult" people) into leaving the country and emigrating to Italy.He managed to illegally come back at the end of August, 1988
Edited sentence: After three days he attempted to come back to Poland but his passport was confiscated and he was deported from the airport in Warsaw to Vienna.At the end of April, 1988 he was given the opportunity by the communist authorities (who at the time were trying to get rid of "difficult" people) to travel to Rome for much needed medical treatment, and his right of return to Poland was guaranteed through mediation of the Catholic Church.He managed to illegally come back to Poland in September 1988, by pretending to be a Canadian human rights delegate