“It is disruptive to their planning and command and control,” Gen. Dempsey said. “These are high-value targets, senior leadership.”
U.S. officials said that among the two ISIS leaders killed in early December was Haji Mutazz, who is described as a “deputy wali” or “governor.” They describe Mutazz as being the right-hand man to Abu Bakr al-Baghdadi, the leader of ISIS.
Also killed in December was Abd al Basit, whom the officials described as the head of ISIS military operations in Iraq.
Another strike in late November also resulted in the death of Radwin Talib, who is described as having been the Wali, or governor, in Mosul.
One official said that the targeting of senior level leaders is being done to set the conditions for an eventual Iraqi military offensive into Mosul. U.S. officials have said that the Mosul offensive could occur late in 2015 though the Iraqi military seems intent on a faster timeline.
Lt. Gen. James Terry, the commander of the Combined Joint Task Force, Operation Inherent Resolve, told reporters at a Pentagon briefing that the U.S. and its coalition partners have conducted 1,361 airstrikes in Iraq and Syria.
“Combined efforts like these are having a significant effect on Daesh's ability to command and control, to resupply, and to conduct maneuvering,” said Terry.
Terry said that ISIS “has been halted and transitioned to the defense and is attempting to hold what they currently have.” He would not provide a timeline for a potential Iraqi counterattack in Mosul, but said in the meantime Iraq’s military will conduct local counteroffensives.
The U.S and five Arab nations have also conducted hundreds of airstrikes inside Syria, namely the city of Kobani along the border with Turkey. The airstrikes in that city have blunted an ISIS offensive against Syrian Kurdish fighters. At a congressional hearing last week, Brett McGurk, one of the administration’s point men in building the coalition against ISIS, said the airstrikes there have “resulted in nearly 1,000 ISIL fighters killed, including many leaders.”
“We will continue to be persistent in this regard and we will strike Daesh at every possible opportunity,” said Terry, who used the Arabic term to describe the ISIS acronym.
Terry explained that Gulf allies have asked the United States to refer to the group by this Arabic term because the English variant legitimizes “a self-declared caliphate." The general said “Daesh” also sounds like another word “that means to crush underneath the foot.”
Terry said there have now been 53 airstrikes since Tuesday to support the Peshmerga effort to retake Sinjar and Zumar, with Kurdish forces haven retaken 100 square kilometers of territory. He said that so far his forces have not had to investigate reports of civilian casualties from the airstrikes. He noted that targeting from the air requires a lot of work because of the negative impact a strike on civilian casualties could have on the operation.