Ongoing airstrikes in Iraq against the terrorist group Islamic State may affect the yet-to-be-finalized defense budget in fiscal year 2015, officials have said, though it is unclear when Congress will pass the bill and therefore how much time there is to align future operations with funding. In a Pentagon press conference on Thursday, Chairman of the Joint Chiefs of Staff Army Gen. Martin Dempsey said that already “the adaptations we've made to our global posture and in particular our regional…