Yaren is the de facto capital of which country?

Yaren, in earlier times Makwa/Moqua, is a district of the Pacific nation of Nauru. It is the de facto capital of Nauru. Nauru, officially the Republic of Nauru and formerly known as Pleasant Island, is an island country in Micronesia in the Central Pacific. Its nearest neighbor is Banaba Island in Kiribati, 300 kilometers (186 mi) to the east. It further lies northwest of Tuvalu, north of the Solomon Islands, east-northeast of Papua New Guinea, southeast of the Federated States of Micronesia and south of the Marshall Islands. With 10,084 residents in a 21-square-kilometer (8.1 sq mi) area, Nauru is the smallest state in the South Pacific and third smallest state by area in the world, behind only Vatican City and Monaco.

Settled by people from Micronesia and Polynesia, Nauru was annexed and claimed as a colony by the German Empire in the late 19th century. After World War I, Nauru became a League of Nations mandate administered by Australia, New Zealand and the United Kingdom. During World War II, Nauru was occupied by Japanese troops, who were bypassed by the Allied advance across the Pacific. After the war ended, the country entered into UN trusteeship. Nauru gained its independence in 1968.