Indonesia is a presidental republic based on the 1945 constitution and described as "presidential with parliamentary characteristics".
Since 1998 after Suharto's overthrow a constitutional reform process has already produced several important changes.
Chief of state and head of government is president Susilo Bambang Yudhoyono, after winning the election on 20 October 2004 with 61% of the votes. Vice president is Jusuf Kalla.
Presidental elections take place every five years. People from the age of 17 and married persons regardless of age are admitted to the votes.
The highest legislative body is the Majelis Permusyawaratan Rakyat (MPR or "People's Consultative Assembly"), having the function of establishing state policy guidelines and amending the constitution.
It consists of the Dewan Perwakilan Rakyat (DPR or "Peoples Representatives Council") and the Dewan Perwakilan Daerah (DPD or "Regional Representatives Council").
The legal system is based on Roman-Dutch law modified by indigenous concepts and new criminal procedures code. Judges are appointed by the president.
Indonesia is a founding member of the Association of South East Asian Nations (ASEAN), and therefore a member of both ASEAN+3 and the East Asia Summit (EAS).
CIA World Factbook: Additional facts and figures on Indonesia's government.