 Complete the following phrase:  In mid-2014, an international coalition led by the United States intervened against ISIL in Syria and Iraq with an airstrike campaign, in addition to supplying advisors, weapons, training, and supplies to ISILs enemies in the Iraqi Security Forces and Syrian Democratic Forces. This campaign reinvigorated the latter two forces and damaged ISIL, killing tens of thousands of its troops and reducing its ficial and military infrastructure. This was followed by a smaller-scale Russian intervention exclusively in Syria, in which ISIL lost thousands more fighters to airstrikes, cruise missile attacks, and other Russian military activities and had its ficial base further degraded. In July 2017, the group lost control of its largest city, Mosul, to the Iraqi army, followed by 