Iraq‘s defense minister said on Sunday he had told his Turkish counterpart that hundreds of Turkish forces deployed inside Iraq near the Islamic State of Iraq and the Levant (ISIL)-held city of Mosul had been sent without informing or coordinating with Baghdad, and should be withdrawn.

Khaled al-Obeidi said in a statement the Turkish defense minister had explained the deployment as necessary to protect Turkish military advisers training Iraqi forces in preparation for a campaign to retake Mosul.

But Obeidi said the Turkish force was too large for such a purpose.

“No matter the size of the force entering Iraq, it is rejected,” the statement said. “It was possible to undertake this sort of prior coordination without creating circumstances which contributed to a crisis between the two countries.”

Iraq’s president, prime minister and foreign ministry have all objected to the Turkish deployment in recent days, calling it a hostile act and a violation of international law. Baghdad also summoned the Turkish ambassador to issue a formal protest.

Turkish Prime Minister Ahmet Davutoğlu said on Saturday that it was a routine troop rotation and that Turkish forces had set up a camp some 30 kilometers (19 miles) northeast of Mosul at the Mosul governor’s request, and in coordination with the Iraqi Defense Ministry.

A small number of Turkish trainers were already at the camp before the latest deployment to train the Hashid Watani (national mobilization), a force made up of mainly Sunni Arab former Iraqi police and volunteers from Mosul, which ISIL militants seized in June 2014.