Across Lebanon, the Middle East, and beyond, the fall of Syria’s authoritarian government at the hands of Islamist-led rebels set off waves of jubilation, trepidation and alarm.

Many Lebanese exulted at the overthrow of the Syrian leader while others worried about more instability rocking a region in turmoil.

Abu Mohammed al-Golani, the militant leader whose stunning insurgency toppled Syria's President Bashar Assad, has spent years working to remake his public image, renouncing longtime ties to al-Qaida and depicting himself as a champion of pluralism and tolerance. As he entered Damascus behind his victorious fighters Sunday, he even dropped his nom de guerre and referred to himself with his real name, Ahmad al-Sharaa.

The extent of that transformation from jihadi extremist to would-be state builder is now put to the test.

Half a century of rule by the Assad family in Syria crumbled with astonishing speed after insurgents burst out of a rebel-held enclave and converged on the capital, Damascus, taking city after city in a matter of days.

Opposition forces swept across the country and entered Damascus with little or no resistance as the Syrian army melted away. President Bashar Assad, Syria's ruler for 24 years — succeeding his father, Hafez Assad — fled the country. Russian state media reported that he was in Moscow.

Syrian President Bashar Assad fled the country on Sunday, bringing to a dramatic close his nearly 14-year struggle to hold onto control as his country fragmented in a brutal civil war that became a proxy battlefield for regional and international powers.

The exit of the 59-year-old Assad stood in stark contrast to his first months as Syria's unlikely president in 2000, when many hoped he would be a young reformer after three decades of his father's iron grip. At age 34, the Western-educated ophthalmologist appeared as a geeky tech-savvy fan of computers with a gentle demeanor.

For Iran's theocratic government, it keeps getting worse.

Its decadeslong strategy of building an "Axis of Resistance" supporting militant groups and proxies around the region is falling apart. First came the crushing Israeli campaign in Gaza triggered by the Oct. 7, 2023, attack on Israel by Iranian-backed Hamas.

It was one of the darkest moments in the modern history of the Arab world. More than four decades ago, Hafez Assad, then president of Syria, launched what came to be known as the Hama Massacre.

Between 10,000 to 40,000 people were killed or disappeared in the government attack on the central Syrian city. It began on Feb. 2, 1982, and lasted for nearly a month, leaving the city in ruins.

The surprise resurgence of Syria's civil war is shaking the table for the United States, which tried to turn the page years ago on a devastating conflict where it saw few good outcomes.

The latest turmoil in a chaotic region comes less than a couple months before the return of President-elect Donald Trump, whose team could see an unexpected opportunity as part of its bid to reshape the Middle East, albeit with plenty of question marks.

A truce between Israel and Hezbollah, brokered by the United States and France, called for an initial two-month ceasefire in which the militants are to withdraw north of the Litani River and Israeli forces are to return to their side of the border.

For many Lebanese, the pause in fighting brought relief — but also heartache. Displaced families returned home to sift through the bombed-out ruins of their shops and apartments.

Hours after a U.S.-brokered ceasefire to end Israel's war on Lebanon went into effect, Lebanon woke up to the sound of celebratory gunfire instead of Israeli airstrikes and drones buzzing overhead.

It was a rare moment of respite for Lebanon, as bombs stopped falling after a year of war. Thousands of displaced people joyfully drove back to their towns and villages in southern and eastern Lebanon.

The Lebanese civilians most devastated by the Israeli war are Shiite Muslims, and many of them believe they are being unfairly punished because they share a religious identity with Hezbollah militants and often live in the same areas.

"This is clear," said Wael Murtada, a young Shiite man who anxiously watched paramedics search rubble after a recent Israeli airstrike destroyed his uncle's two-story home and killed 10 people. "Who else is being attacked?"