"In the last 24 hours, we learned that [the Turks] likely intend to extend their attack further south than originally planned, and to the west," Defense Secretary Mark Esper said on CBS.
Putin also told Arab broadcasters in an interview aired on Sunday he had no reliable information about who was behind last month's attack on Saudi oil facilities.
The president also said Iran's missile programme should be dealt with as a separate matter to its nuclear programme, ahead of his first visit to Saudi Arabia in over a decade.
"The Guards should have advanced and modern weapons ... Your weapons should be modern and updated. It should be developed at home. You need to develop and produce your weapons," Khamenei said.
More than 130,000 people have been displaced from rural areas around the northeast Syrian border as a result of fighting between Turkish-led forces and Kurdish militia.
“We are standing with our close friend and partner, the State of Israel,” Trump said, as he reviewed the steps he has taken on behalf of the Jewish state since taking office.
Turkey has used the Syrian Arab fighters as a way to avoid casualties, unleashing them to attack and murder Kurds after US President Donald Trump announced the US would leave parts of Syria.
In a speech three years ago, Supreme Leader Ayatollah Ali Khamenei complained that English was even spreading into daycares.
Iranian forces and Iranian-backed militias in Al-Bukamal have been targeted multiple times by airstrikes in recent months.
Syria is not a vacuum and when ISIS makes progress in Syria it will affect Iraq. “ISIS continues its guerilla insurgency in rural areas,” the report notes.
Iran's call came on the fourth day of Turkey's offensive against the Syrian Kurdish YPG militia, which Ankara regards as a terrorist group with links to the PKK.
"Now the SDF's attack has started and there are very fierce clashes now," Marvan Qamishlo, an SDF military media official told Reuters.
"An appropriate response will be given to the designers of this cowardly attack, but we will wait until all aspects of the plot are clarified," Iranian spokesman Ali Rabei said.
Turkish forces had overnight stepped up their bombardment of Ras al Ain in their incursion, after U.S. troops in the region came under artillery fire from Turkish positions.
"They're going to be going there next week," Morrison was cited by Australian media as saying.
The shelling of US Forces was heavy, the Turkish Defense Ministry denied targeting American soldiers, says attack was supposed to be on "terrorist positions".
The Kurds, who recaptured swathes of northeastern Syria from Islamic State with the backing of the United States, say the Turkish assault could allow the jihadist group to re-emerge.
"We have not abandoned the Kurds, let me be clear about that," U.S. Defense Secretary Mark Esper told reporters at the Pentagon.
Turkey stepped up its air and artillery strikes on Kurdish militia in northeast Syria on Friday.