The Islamic State (IS) terrorist group that has seized large parts of Iraq threatened the United States on Monday it will attack Americans "in any place" if U.S. airstrikes in Iraq hit its people.
According to Reuters, the threat was made in a video published by the group.
The video, which shows a photograph of an American who was beheaded during the U.S. occupation of Iraq and victims of snipers, featured a statement which said in English "we will drown all of you in blood".
On Saturday, the U.S. military confirmed it conducted nine airstrikes near Arbil and Iraq's largest dam in an effort to help Kurdish forces retake it from the IS.
Obama said at a news conference on Monday that the Islamic State posed a threat to Iraq and the entire region.
Meanwhile, humanitarian aid continues to be delivered to thousands of Yazidis trapped in the Sinjar Mountains while fleeing IS's ultimatum to convert or die.
The ancient Yazidi community has been particularly targeted by the Islamic State, with reports of large-scale massacres and systematic rape drawing concerns of an impending genocide if rapid action is not taken.