occupation proved fundamental for Indonesian independence. However, the Indonesian Communist Party founded by Dutch socialist Henk Sneevliet in 1914, popular also with Dutch workers and sailors at the time, was in strategic alliance with Sarekat Islam (q.v.) as early as 1917 until the Proclamation of Indonesian Independence and was particularly important in the fight against Japanese occupation of the Dutch East Indies in the Second World War. The Japanese encouraged and backed Indonesian nationalism in which new indigenous institutions were created and nationalist leaders such as Sukarno were promoted. The internment of all Dutch citizens meant that Indonesians filled many leadership and administrative positions, although the top positions were still held by the Japanese. Two days after the Japanese surrender in August 1945, Sukarno and fellow nationalist leader Hatta unilaterally declared Indonesian independence. A four and a half-year struggle followed as the Dutch tried to re-establish their colony. Dutch forces eventually re-occupied most of the colonial territory and a guerrilla struggle ensued. The majority of Indonesians, and – ultimately – international opinion, favored independence, and in December 1949, the Netherlands formally recognized Indonesian sovereignty. Under the terms of the 1949 agreement, Western New Guinea remained under the auspices of the Dutch as Netherlands New Guinea, and its dispute will be resolved by a year. The new Indonesian government under President Sukarno pressured for the territory to come under Indonesian control as Indonesian nationalists initially intended. Following United States pressure, the Netherlands transferred it to Indonesia under the 1962 New York Agreement. Suriname and the Netherlands Antilles In 1954, under the "Charter for the Kingdom of the Netherlands", the Netherlands, Suriname and the Netherlands Antilles (at the time including Aruba) became a composite state, known as the "Tripartite Kingdom of the Netherlands". The former colonies were granted autonomy, save for certain matters including defense, foreign affairs and citizenship, which were the responsibility of the Realm. In 1969, unrest in Curaçao led to Dutch marines being sent to quell rioting. In 1973, negotiations started in Suriname for independence, and full independence was granted in 1975, with 60,000 emigrants taking the opportunity of moving to the Netherlands. In 1986, Aruba was allowed to secede from the Netherlands Antilles federation, and was pressured by the Netherlands to move to independence within ten years. However, in 1994, it was agreed that its status as a Realm in its own right could continue. On 10 October