The Islamic State of Iraq and Syria, or ISIS, is gobbling up more territory in preparation for striking Western nations, and a retired U.S. Army Special Forces officer says the U.S. needs to stop underestimating the enemy and start engaging Sunnis in Iraq to stand up and fight for their homeland. Retired Lt. Col. Scott Mann spent 23 years in the Special Forces, including 15 years of service as a Green Beret. He saw combat duty in Iraq, Afghanistan and several other spots around the world during his years in uniform. Mann points out that ISIS now controls a land area greater in size than the United Kingdom. He says the U.S. and its allies need to realize ISIS likely presents a greater threat to the West than any other group it has confronted since Sept. 11.

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