"Thus far, with regards to Turkish presence outside of Mosul, we have not seen movements that have raised concerns about the Turks violating that principle," Earnest stated. "We will continue to monitor this situation."
Earnest noted the United States has made it clear to Turkish authorities that "any effort or any operation its undertaken in support of counter-Daesh operation must be coordinated with and in support of first given by Iraqi government."
On October 17, Iraqi Prime Minister Haider Abadi announced the start of the military operation to retake Mosul from Daesh.
About 30,000 Iraqi soldiers and 4,000 Kurdish Peshmerga fighters are participating in the operation, backed by artillery and airstrikes carried out by the US-led coalition.