Over two million Syrians who had fled their homes during their country's war have returned since the ouster of Bashar al-Assad, UN refugee agency chief Filippo Grandi said Thursday, ahead of a visit to Syria.

The Syrian civil war, which erupted in 2011 with Assad's brutal repression of anti-government protests, displaced half of the population internally or abroad.

But Assad's December 8 ouster at the hands of Islamist forces sparked hopes of return.

"Over two million Syrian refugees and displaced have returned home since December," Grandi wrote on X during a visit to neighboring Lebanon, which hosts about 1.5 million Syrian refugees, according to official estimates, AFP reported.

It is "a sign of hope amid rising regional tensions," he said.

"This proves that we need political solutions -- not another wave of instability and displacement."

After 14 years of war, many returnees face the reality of finding their homes and property badly damaged or destroyed.

But with the recent lifting of Western sanctions on Syria, new authorities hope for international support to launch reconstruction, which the UN estimates could cost more than $400 billion.

Earlier this month, UNHCR estimated that up to 1.5 million Syrians from abroad and two million internally displaced persons may return by the end of 2025.