Prabowo Subianto was sworn in as the president of Indonesia on Sunday at a ceremony in the capital Jakarta, a state television broadcast showed.
The 73-year-old former general took the oath at parliament, taking the reins of the world's fourth most populous nation and succeeding outgoing leader Joko Widodo who was in power for a decade.
"I swear that I will fulfill the duties of the president of the Republic of Indonesia as best as possible and as fair as possible, uphold the constitution and implement all laws and regulations as strictly as possible," he said.
The former defence minister was to address lawmakers before heading to the presidential palace where Widodo, more popularly known as Jokowi, will hand over the reins after a decade in power.
Prabowo has committed himself to Indonesia's non-aligned foreign policy, but has signalled that he will be bolder on the world stage.
He made China his first foreign visit after his election eight months ago, before embarking on trips to a dozen other countries including Russia, Saudi Arabia and Australia, where he signed a key security deal.
He will also inherit Southeast Asia's largest economy and the world's largest nickel reserves, taking lead of a country of 280 million where about half are below the age of 30.
Prabowo won by a landslide in the first round of the February vote, helped by the support of his running mate Gibran Rakabuming Raka, the 37-year-old son of Jokowi, and bold campaign pledges including a $28 billion free meal plan for children.
Security was heightened across the capital Jakarta ahead of the inauguration, with around 100,000 police and army personnel deployed -- including riot squads, sniper units and anti-drone teams.
Prabowo will parade between parliament and the palace where was to meet Jokowi for a handover ceremony after an expected address to lawmakers.
Tens of thousands are expected to line the streets as he becomes Indonesia's eighth leader since the country achieved independence from Dutch colonial rule in 1945.
Several dozen diplomats were expected to attend his inauguration, including British foreign minister David Lammy and Chinese Vice President Han Zheng.
Disappearances
NGOs and his former military bosses accuse Prabowo of ordering the abduction of democracy activists at the end of dictator Suharto's rule in the late 1990s.
According to the Commission for the Disappeared and Victims of Violence, or Kontras, 23 activists were kidnapped between 1997 and 1998.
Nine were found alive, one was found dead and 13 are still missing.
Prabowo was discharged from the military over the abductions, but denied the allegations and was never charged.
The United States once refused to give Prabowo a visa because of his rights record, and he was also reportedly included on a blacklist in Australia for a while.
Prabowo has also been accused of involvement in military crimes in East Timor, which Indonesia invaded and occupied in 1975 until 2002.
Grandfatherly
A new image won over younger voters in the last election, with Prabowo remodelling himself as a grandfatherly figure.
He shared images of his cats to his six million Instagram followers, while videos of him dancing went viral and painted him as the everyman candidate.
The decision to recruit Gibran as his running mate also proved popular, but courted controversy after rules were changed to lower the age for candidates.
Gibran's popularity is tied to his father, who took Indonesia out of the Covid-19 pandemic relatively unscathed and back to five percent growth.
The outgoing president's successor has set an even higher target of eight percent growth within several years of his administration.
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