Fox News strategic analyst Lt. Col. Ralph Peters (Ret.) said he fears another Iraqi civil war breaking out following the U.S.-led offensive against ISIS in Mosul. 

Iraqi government and Kurdish forces, backed by U.S.-led coalition air and ground support, launched the offensive early today to seize control of the northern city from ISIS fighters.

Mosul, Iraq's second largest city, has been under ISIS rule for more than two years and is still home to more than a million civilians according to U.N. estimates.

(Read more details on the operations at

Peters characterized the U.S. role in Iraq as "herding cats," with the future of Iraq very much undecided. Peters said the U.S. must try to hold together a fragile alliance after the strategic city is wrested from ISIS.

He explained there are many different factions with "chips on the table," including the Kurds, the Turkomen backed by Turkey, the central government and various militias.

"After the shooting is done, the arguing is gonna start and I frankly expect at least one more civil war in the coming years. Iraq doesn't work," he said. 

Watch Peters' analysis above.

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