Michael Pregent was an embedded adviser to the Peshmerga in Mosul and an intelligence and policy adviser to Generals Petraeus and Odierno on Iranian activities in Iraq. He served 20 years as an intelligence officer in the Army and seven years with the Defense Intelligence Agency as an Iraq expert. He is currently an adjunct fellow at the Hudson Institute.
The US must act after Iran opened a new front in its regional war, exploiting American weakness in Iraq to use the country as a base to target the Kingdom of Saudi Arabia and threaten US interests in the region.
It makes no sense for a nation to treat its enemies kindly and its allies harshly. Any nation that tries this foolish approach will see its enemies grow stronger and more dangerous, and will lose its allies when it abandons them.