The international community is now boosting more arms and aid suppply to Iraq in an effort to tackle Sunni militant insurgency and help displaced civilians.
The US says it is considering a range of military options, including airlifts and creating safe passage for fleeing civilians.
Ben Rhodes is the US Deputy National Security Advisor.
"Again, our goal here is to work with the Iraqis and with international partners that these people can get off that mountain to a safer place. Again, we don't believe that that involves US troops re-entering a combat role in Iraq."
This comes after U.S.'s move to send a new batch of military "advisers" to help Kurdish officials deal with the humanitarian situation.
Besides the humanitarian aid, the US has conducted air strikes against Islamic State targets.
As such, the European Union has now given the green-light for its member-states to supply arms to the Kurds in coordination with Baghdad, with France already announcing plans to deliver weapons into the region.
The UK has also pledged to join the international rescue mission for displaced civilians.
Thousands of Iraqis have been trapped inside areas controlled by the so-called Islamic State.
Many of them are being threatened with death unless they convert to Islam, and have been trying to flee into Iraqi Kurdistan.
