With a change in government following the 1974 Portuguese revolution, the colonial ruler of East Timor, Portugal, moved to decolonise. As a result, Portugal effectively abandoned their colony of East Timor. Following this, in 1975, the two main East Timorese political parties Fretilin and the UDT, formed a government. At this time, Indonesia began a secret operation to build a relationship with the UDT, named "Operation Komodo". The UDT attempted a coup, which Fretilin resisted with the help of the local Portuguese military. With the UDT leaders fleeing into Indonesia, Fretilin made a unilateral declaration of independence on 28 November 1975, of the "Democratic Republic of East Timor" ("República Democrática de Timor-Leste" in Portuguese). Shortly after, on 7 December 1975, Indonesian forces invaded East Timor.