Thailand forcibly returned more than 100,000 Cambodians last year.
In a meeting this week both foreign ministers said they would speed up negotiations over joint development in offshore blocs.
Recently, Prime Minister Hun Sen has called for the nullification of land certificates in protected natural areas in Cambodia.
Growth was bolstered by strong garment exports, increased tourism and a slowly recovering real estate sector, IMF said in a statement.
In recent testimony, Nuon Chea accused the Vietnamese of their own atrocity crimes, a claim Vietnamese officials deny.
Independent analyst Lao Monghay said he supports reform plans, but they are not being implemented.
In Siem Reap, the Pyongyang restaurant, the first opened in Southeast Asia, is a hit among Asian tourists.
Prime Minister Hun Sen has said he wants the country to export 1 million tons of milled rice by 2015.
China has become one of the largest donors to Cambodia, providing around $1 billion in aid last year.
Vice president of Cambodia’s National Assembly, Nguon Nhel, says Cambodia should not be compared to Middle Eastern dictatorships.
The petition comes just a week before ministers of Mekong River Commission member states, are to meet to make a final decision.
The agreement was made public after a meeting between Council Minister Sok An and a former ambassador from Pyongyang, last week.