From Al Jazeera. Any opinions expressed are those of the authors, and do not necessarily reflect the views of Iraq Business News.
Iraq calls it an invasion; Turkey says its insurance. Both are arguing over Turkish troops in Iraq.
The Iraqi army, along with Kurdish, Sunni Arab and Shia Muslim troops, began the fight to recapture Mosul on Monday.
Iraqi commanders say they've already inflicted heavy losses of life and equipment on ISIL.
The Turkish President appears determined to join the battle - the Iraqi Prime Minister is against.
Recep Tayyip Erdogan says Iraq can't push ISIL out of Mosul without Turkish military help.
Prime Minister Haider al-Abadi says he won't allow Turkish forces to take part.
Erdogan says Turkish troops are already in Iraq and will stay until Mosul is liberated.
Is Turkey complicating the battle plans? And what are Turkey's main objectives in Iraq?
Mustafa Akyol: Writer, International New York Times.
Maria Fantappie: Senior Iraq Analyst, International Crisis Group.
Robert Pape: Professor, University of Chicago.