Niue (pronounce /niːˈʔuːeɪ/, /ˈnjuːeɪ/ in English) is an island nation located in the South Pacific Ocean. It is commonly known as the "Rock of Polynesia". Natives of the island call it "the Rock". Although self-governing, Niue is in free association with New Zealand, meaning that the Sovereign in Right of New Zealand is also Niue's head of state. Most diplomatic relations are conducted by New Zealand on Niue's behalf. Niue is located 2,400 kilometres northeast of New Zealand in a triangle between Tonga, Samoa, and the Cook Islands. The Niuean language and the English language are both taught in schools and used in day-to-day business and communications. The people are predominantly Polynesian.