The United States urged all countries on Tuesday to support an "inclusive" political process in Syria after the fall of President Bashar al-Assad's regime.

US Secretary of State Antony Blinken said on Tuesday that the United States fully supports the political transition process in Syria and wants the process to lead to trustworthy, inclusive, non-sectarian governance that meets international standards of transparency and accountability, according to Reuters news agency.

"The Syrian people will decide the future of Syria. All nations should engage in supporting an inclusive and transparent process and refrain from any outside interference," Blinken said, stressing that Washington "will fully recognize and support the future Syrian government that emerges from this process."

Close contact with Israel and the Syrian opposition

White House spokesman John Kirby said Tuesday that US officials are in close contact with Syrian opposition groups and Israeli officials as the situation evolves.

Kirby added that the national security team is keeping President Joe Biden fully informed and that National Security Advisor Jake Sullivan will travel to Israel on Wednesday.

He said the United States was not involved in any Israeli operations in Syria and that Israel had made clear that these were "temporary measures to ensure its security."

He added that the United States wants to ensure that the Syrian people can determine their future and ensure a Syrian-led evolution towards “better and more representative governance.”

The White House spokesman said the United States is in close contact with Turkey over the withdrawal of the US-backed Syrian Democratic Forces from Manbij in northern Syria after advances by Ankara-backed armed opposition groups.

Journalist Tice is still alive.

Kirby confirmed that US officials are making strenuous efforts to obtain as much information as possible about journalist Austin Tice, who was captured in Syria 12 years ago.

He added that US estimates indicate that he is still alive.

Tice, a former U.S. Marine and freelance journalist, was 31 when he was kidnapped in August 2012 while covering the uprising against Syrian President Bashar al-Assad.