Vietnam calls on Cambodia to protect immigrants

Vietnam called on Cambodia on Tuesday to guarantee the legal rights of Vietnamese migrants living there after the Cambodian government said it would revoke the invalid documents of 70,000 immigrants, most of them ethnic Vietnamese.Anti-Vietnamese sentiment is widespread in Cambodia and has often been used as a tool by opponents of Prime Minister Hun Sen, who came to power during Vietnam's occupation of Cambodia after it drove out the genocidal Khmer Rouge regime in 1979.