They don't necessarily have to fly over Iraq. They could fly either over Saudi Arabia or Turkey or around Saudi Arabia and then hit Iran from the coast. There are ways around it, in which case, the US would not be able to prevent unless they took control over these airspaces as well.
Australia's most dangerous Islamic State operative killed in U.S. strike (AP)
from the article: Brzezinski: U.S. should forcibly stop IAF flying over Iraq to reach Iran
Trump's adviser Jason Greenblatt promised to 'create a different tone in Europe and around the world.'21:46 04.05.16 | 0 comments