**A court in Vietnam has convicted four activists, including prominent human rights lawyer Le Cong Dinh, of trying to overthrow the communist government.**The four men received sentences of up to 16 years on charges of subversion.
Tran Huynh Duy Thuc, an internet entrepreneur, received the longest sentence.
The case has drawn strong criticism from rights groups abroad, who see it as a sign of an increasing clampdown on democracy and freedom of expression.