Turkey will do "whatever it takes" to ensure its security if the new Syrian administration cannot address Ankara's concerns about U.S.-allied Kurdish groups it views as terrorist groups, Foreign Minister Hakan Fidan said on Saturday.

Ankara is concerned that Israel may seek to solidify its territorial gains in Syria, leveraging regional instability and pro-Israel US policies.

Turkey-backed forces are aiming to capture more territory in northern Syria from Kurdish groups, according to Turkish officials familiar with the matter, a move that could stir tensions with the US.

Turkey expects foreign countries will withdraw support for Kurdish fighters in Syria following the toppling of Bashar al-Assad, President Tayyip Erdogan said, as Ankara seeks to isolate Kurds who have long fought alongside U.