According to him, one should not trust those who confidently assert that a military victory over IGIL will finish or stop other terrorist conflicts around the world. At the moment, the grouping is experiencing great difficulties with financing and control over the remaining positions, because the ring of the Alliance forces is gradually shrinking around the militants, an increasing number of people are surrendering under the pressure of the coalition.

"We continue to fight them, they retreat and can not resist our alliance," concludes Mattis.

As reported in "URA-Inform", recently Poroshenko and Mattis talked about Russian aggression in the east of Ukraine.