Cambodia is a place.
Cambodia . It is 181035 km2 in area , bordered by Thailand to the northwest , Laos to the northeast , Vietnam to the east , and the Gulf of Thailand to the southwest . The country 's minority groups include Vietnamese , Chinese , Chams , and 30 hill tribes . The kingdom is a constitutional monarchy with Norodom Sihamoni , a monarch chosen by the Royal Throne Council , as head of state .