U.S. updates travel warning , saying violence in Iraq is at 2007 levels . U.S. looks at options , which includes sharing intelligence . ISIS spokesman Abu Mohammed al-Adnani says on the message posted early Thursday ( last Wednesday night ET ) on the group 's media website . ` Heavy fighting in Baghdad as militants take over much of that city . Half a million people have fled the fighting , he says .
U.S. updates travel warning , saying violence in Iraq is at 2007 levels . U.S. looks at options , which includes sharing intelligence . Heavy fighting in Baghdad as militants take over much of that city . Half a million people have fled the fighting , he says .