Vietnamese courts have handed down harsh prison sentences to two dozen people after finding them guilty of terrorism and subversion including a case linked to an exiled group. A court in Ho Chi Minh City convicted 14 people for a petrol bomb attack at the city's international airport in April and sentenced them to between five and 16 years in prison yesterday. <br/><br/>The bomb caused a scare but no casualties. It was linked to an exiled group of the defeated South Vietnamese republic. A court in south-central province of Binh Dinh sentenced nine people to between three to 14 years for attempted subversion and spreading propaganda against the communist state. Both cases were reported by state-run Thanh Nien newspaper. Court officials were unavailable for comment today.'<br/><br/>