Michel Aoun, the 89-year-old Christian president who presided over Lebanon's cataclysmic financial meltdown and the deadly Beirut port blast, vacates the presidential palace on Sunday, leaving a void at the top of the failing Lebanese state.

Lebanon's parliament has so far been unable to agree on a successor in the role, which has the power to sign bills into law, appoint new prime ministers and green-light government formations before they are voted on by parliament.

Like during more than half of Aoun's time in office, Lebanon is currently governed by a caretaker cabinet as the premier-designate has been trying for six months to form a government.

Aoun is a deeply divisive figure, adored by many Christians who viewed him as their defender in Lebanon's sectarian system but accused by critics of enabling corruption and helping armed group Hezbollah gain influence.

He secured the presidency in 2016, endorsed by both Hezbollah and rival Maronite Christian politician Samir Geagea in a deal that brought then-leading Sunni politician Saad al-Hariri back as prime minister.

The six-year term that followed saw Lebanon's army fight off Islamist militants on the Syrian border in 2017 with Hezbollah’s help, a new electoral law passed in 2018 and top energy companies begin exploratory drilling in offshore blocks in 2020.

In his final week in the palace, he signed onto a U.S.-mediated deal delineating Lebanon's southern maritime border with Israel.

"Aoun's was the strongest era in all of Lebanon's history,” said Lama Nohra, a 32-year-old supporter and mother of three young children. "After all of his accomplishments, how could we not love him?"

For others, those modest successes pale in comparison to the 2019 financial meltdown, which has pushed more than 80% of the population into poverty and prompted the most widespread anti-government protests in recent history.

Aoun's term was also inextricably linked to the 2020 blast at the Beirut port, which left more than 220 people dead.

Aoun later said he had known about the chemicals stored there and told Reuters in an interview on Saturday that his presidential powers were not wide enough to address the economic crisis.

"He was by far the worst president in Lebanon’s history" said Michel Meouchi, a lawyer and father. "I prefer a void in the presidency to him."

The son of a farmer from a Beirut suburb, Aoun's path to the presidency began in the 1975-1990 civil war, during which he served as commander of Lebanon's army and the head of one of two rival governments.

He returned to Beirut after 15 years in exile, once Syrian forces withdrew under international pressure following the 2005 assassination of former prime minister Rafik al-Hariri.

In 2006, his Free Patriotic Movement formed an alliance with Hezbollah, which lent important Christian backing to the armed group. In his interview with Reuters, Aoun credited Hezbollah for its "useful" role in acting as a “deterrent” against any Israeli attacks during the maritime border talks.