"He (Carter) wants to accelerate the defeat of Islamic State (ISIS). And until that happens and their claims to a caliphate are eliminated, that that he won't be satisfied. He'd like this to move faster," the Pentagon Press Secretary Peter Cook told reporters at a news conference yesterday.
Iraqi forces entering the strategic town of Rutbah is a significant development in the war against ISIS, he said.
Rutbah outsized significance because of its position on the main land route between Jordan and central Iraq.
Before ISIS seized this town, more than USD 1 billion in trade passed through Rutbah each year and the eventual reopening of that route will have important benefits for the economy both in Iraq and in the region, Cook said.
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Iraqi forces retook Rutbah from ISIS on Thursday, in the wake of a weeklong series of deadly attacks by the insurgents in Baghdad.
"In the course of doing that, given the situation with ISIL and the threat they pose, those US forces find themselves in harm's way and there have been instances in which they've found themselves in combat," he said.