Return to Vukovar
For 87 days in 1991, the world watched in helpless horror as 2000 civilians and volunteers defended the town of Vukovar against tens of thousands of heavily armed soldiers from the Serbian-dominated Yugoslav National Army.
The fighting had broken out after the collapse of the former Yugoslavia.
Vukovar, on the banks of the Danube, became known as "The City of Heroes" for the acts of valour among the untrained army of defenders.
Yet it also has a much darker significance.
The siege brought a new and terrible phrase into common usage: ethnic cleansing.
Former BBC correspondent Martin Bell, who covered the siege 20 years ago, returns to find out how Vukovar and its people are recovering.
He finds the city today is a shadow of its former self: haunted by the ghosts of 1991.