A high-level American delegation traveled to Damascus on Friday and sat down with Syria's de facto leader, a former jihadist who the US previously offered a $10 million bounty on his head.
Abu Mohammad al-Jolani led the rapid and successful rebellion against the regime of Bashar al-Assad.
The meeting with Ahmad al-Sharaa, formerly known as Abu Mohammad al-Jolani, underscores the urgency of U.S. efforts to engage with Syria's interim government to ensure the country does not see a resurgence by groups like ISIS.
The United States is considering lifting sanctions on Syria if the new government is accountable and shows progress, the State Department announced.
The international community has also rushed to adopt a set of principles intended to guide the transition to a new Syrian government that is inclusive and respects human rights, which would mark a sharp departure from Assad's brutal rule.
"We want to make clear to HTS and all the emerging authorities that the recognition that they seek, the support that they seek and need from the international community, there are certain expectations that come along with that," Secretary of State Antony Blinken said Thursday.
He acknowledged "the positive statements coming from Mr. Jolani, the leader of HTS," but noted that "everyone is focused on what is actually happening on the ground, what they are doing." He also suggested that the lifting of U.S. and international sanctions on HTS, a designated terrorist group with former ties to Al Qaeda, would depend on "concrete actions."
American diplomats believe that Al-Sharaa is pragmatic and has moderate views on women's rights and equality.
Since the fall of Assad, the Biden administration has been under increasing pressure to put American personnel on the ground to participate in the search for Austin Tice, who was kidnapped in Syria 12 years ago.
Secretary of State Antony Blinken said Thursday that the United States was in contact with "any potential actor who might be able to get information. And that includes anyone and everyone who has relationships with the various authorities on the rise in Syria."