Cambodia, or Kampuchea, a country of Southeast Asia. It lies near the southern end of the Indochinese Peninsula, facing the Gulf of Thailand. Its neighbors are Thailand, Laos, and Vietnam. Cambodia extends some 350 miles (560 km) east-west and 275 miles (440 km) north-south. The country's area is 69,898 square miles (181,035 km2).
Thailand, or Kingdom of Thailand (formerly Siam ), a country in southeastern Asia.
Malaysia, a country in southeastern Asia. It consists of Peninsular Malaysia, an 11-state mainland section on the Malay Peninsula, and the states of Sarawak and Sabah on the island of Borneo.