"They are in Syria and in Raqqa down to, much further down into the formations than in Iraq," Dillon told reporters as quoted by CNN. "They are much more exposed to enemy contact than those in Iraq."
On July 4, the Syrian Democratic Forces (SDF), supported by the coalition, breached the Old City wall in Syria's Raqqa, advancing into its most heavily fortified enclave and overcoming the defenses of the terrorists.
According to the coalition, Islamic State militants were using the historical wall as a fighting position, planting improvised explosive devices and mines between several of the gaps in the wall.
The operation to recapture Raqqa was launched by the SDF on June 6. The terrorist group took control of the city and declared it their capital in Syria on January 13, 2014.
