Iwa was born in
Ciamis,
West Java, on 31 May 1899. After completing his primary education in schools run by the
Dutch colonial government, he left for
Bandung, where he attended the School for Native Government Employees (Opleidingsschool Voor Inlandse Ambtenaren, or OSVIA). Unwilling to adapt the Western culture demanded at the school, he dropped out and moved to
Batavia (now
Jakarta) to attend the law school; while in the colonial capital he also became involved with
Jong Java, an organisation for Javanese youth. Iwa graduated in 1921 and continued his studies at the
University of Leiden in the
Netherlands. In the country he joined the Indonesian Association (
Perhimpoenan Indonesia), a nationalist group of Indonesian intellectuals. He emphasised that Indonesians should work together, regardless of race, creed, or class, to ensure independence from the Dutch; he preached non-cooperation with colonial forces. In 1925 he moved to the Soviet Union to spend a year and a half studying at the
Communist University of the Toilers of the East in
Moscow. In the Soviet Union he was briefly married to a Ukrainian woman named Anna Ivanova; the two had a daughter, Sumira Dingli, together. Upon returning to the Indies in 1927, Iwa joined the
Indonesian National Party and worked as a lawyer. He later moved to
Medan, in
northern Sumatra, where he established the newspaper
Matahari Terbit; the newspaper advocated workers rights and criticised the area's large Dutch-owned plantations. For these writings, and following an attempt to organise a
labour union, in 1929 Iwa was arrested by Dutch colonial authorities and spent a year in jail before being exiled to
Banda Neira, in the
Banda Islands, for a period of ten years. While in Banda Iwa became a devout Muslim, although he continued to believe in the value of
Marxism. He also met several leading nationalist figures also there in exiled, including
Muhammad Hatta,
Sutan Sjahrir, and
Tjipto Mangunkusumo. Iwa later returned to Batavia and, during the
Japanese occupation (1942–45) operated a law firm there. He also gave several lectures on the nationalist causes, under the watchful eye of the Japanese occupational forces. ==Post-independence==