Other court observers say the government lacks the political will to reform the judiciary or overcome Cambodia's culture of impunity.
The Voice of America's programs are broadcast to 42 countries and now has an estimated worldwide audience of 125 million people.
Leadership roles in public institutions are lacking for today's youth, a development expert said Monday.
At least 10 people have died from the disease since June.
“Breaking The Silence” is a play designed to encourage people to talk among each other about their experiences under the Khmer Rouge.
The UN estimates that about 300,000 youths enter the work force each year, a number expected to climb to 400,000 in the near future.
Hun Sen discussed the letters on Monday, saying Cambodia would “fight against a warlike Thai invasion inside Cambodia."
The museum holds an archive of 4,186 prisoner confessions, 6,226 prisoner biographies and 6,147 photographs.
Many victims were disappointed with the UN-backed Khmer Rouge tribunal's sentencing of prison chief Duch last week.
Cambodian officials maintain that the land, west of Preah Vihear temple, does not belong to Thailand.
Cambodia has had diplomatic relations with Iran since 1992, but it communicates with the country through its embassy in Hanoi.
International donors have praised the conclusion of the Khmer Rouge tribunal in the case against prison chief Duch.