US Secretary of State Antony Blinken on Friday told Turkey it was "imperative" to work against a resurgence of the Islamic State (IS) group in Syria following the fall of Bashar al-Assad.
The top US diplomat also said he saw "encouraging signs" on reaching a ceasefire in the war-torn Gaza Strip.
His remarks came on the second leg of a whirlwind regional tour following Bashar al-Assad's ouster in a lightning offensive spearheaded by Islamist-led HTS rebels, ending five decades of repressive rule by his clan.