title: U.S. 'very concerned' by violence around Iraq's Kirkuk: State Department
text: WASHINGTON (Reuters) - The U.S. State Department said on Monday Washington was  very concerned  by reports of violence around the Iraqi oil city of Kirkuk, which was seized by Baghdad s forces from Kurds.  We are monitoring the situation closely and call on all parties to coordinate military activities and restore calm,   State Department spokeswoman Heather Nauert said in a statement. 