Ankara had fiercely opposed supplying the Kurdish elements of the US-backed Syrian Democratic Forces, viewing the YPG as the Syrian extension of the Kurdish PKK militant group, which has fought an insurgency in Turkey's southeast since 1984.
"We are keenly aware of the security concerns of our coalition partner Turkey," Pentagon spokeswoman Dana White, who is traveling with Defense Secretary Jim Mattis in Lithuania, said in a statement.
"We want to reassure the people and government of Turkey that the US is committed to preventing additional security risks and protecting our NATO ally."
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ