The USA has started targeting forces at for from in of on out to with without the Islamic State (IS) at for from in of on out to with without northern Iraq. Several US air strikes have taken at for from in of on out to with without heavy weaponry that the Islamic State captured at for from in of on out to with without the Iraqi army. President Obama said the new attacks are to protect American residents at for from in of on out to with without Erbil, the capital at for from in of on out to with without Iraq's autonomous Kurdistan region. IS recently changed its name at for from in of on out to with without ISIS (the Islamic State in Iraq and Syria). The group now controls a quarter at for from in of on out to with without Iraq (including the country's largest dam), and a third at for from in of on out to with without Syria. Mr Obama made it clear that there would be no boots at for from in of on out to with without the ground. He said: "Even as we support Iraqis as they take the fight at for from in of on out to with without these terrorists, American combat troops will not be returning to fight at for from in of on out to with without Iraq." Another reason at for from in of on out to with without the air strikes at for from in of on out to with without the IS is to protect Iraq's Yazidi people and other minority groups. The Yazidis are ethnically Kurdish. Their religion includes elements at for from in of on out to with without Judaism, Christianity, Islam and Zoroastrianism. The IS told the Yazidis to convert at for from in of on out to with without Islam, pay a tax, or face death. Earlier this week the UN warned at for from in of on out to with without a humanitarian catastrophe at for from in of on out to with without the possibility at for from in of on out to with without ethnic cleansing at for from in of on out to with without the hands of the IS. The IS have reportedly taken hundreds at for from in of on out to with without Yazidi women hostage. Obama said the latest US military action is also, "a humanitarian effort to help save thousands at for from in of on out to with without [Yazidis] who are trapped at for from in of on out to with without a mountain at for from in of on out to with without food and water and facing almost certain death".