A senior Turkish official has said there is no timetable for an end to military operations against Kurdish PKK separatists in northern Iraq.
Speaking after a meeting in Iraq's capital Baghdad, Ahmet Davutoglu said they would continue "until terrorist bases are eliminated".
But Iraqi Foreign Minister Hoshyar Zebari said the action was unacceptable and violated Iraq's sovereignty.
The US says it wants the offensive to end as soon as possible.
US Defence Secretary Robert Gates is visiting Ankara and says he has already raised concerns at the highest levels.
Casualty figures But Mr Davutoglu, chief foreign policy adviser of Turkish Prime Minister Recep Tayyip Erdogan, told reporters: "Our objective is clear. Our mission is clear and there is no timetable... until the terrorist bases are eliminated."
