Original sentence: The government headed by Schüssel was - in its beginnings - probably the most controversial since 1945, which to a large extent is due to the coalition formed with the right-wing Austrian Freedom Party (FPÖ), whose leader at that time was Jörg Haider
Edited sentence: The government headed by Schüssel was - in its beginnings - probably the most controversial since 1945, which to a large extent is due to the coalition formed with the far right-wing Austrian Freedom Party (FPÖ), whose leader at that time was Jörg Haider