Exactly one year ago today, in the wake of massive territorial gains, ISIS announced an Islamic caliphate in an area straddling Iraq and Syria.
The worsening situation and the plight of the Yazidis in particular pushed the United States to take military action, along with several allies.
The airstrikes began on August 8th 2014 and by early June 2015, they were costing a daily average of $9.1 million - $2.7 billion in total. According to the US Department of Defense, a total of 7,655 ISIS targets have now been damaged or destroyed through airstrikes in Syria and Iraq including 98 tanks, 325 captured Humvees and 1,859 fighting positions.
This chart shows targets damaged/destroyed in Operation Inherent Resolve as of 22 June 2015.
You will find more statistics at Statista