BAGHDAD (Reuters) - A convoy of elite Iraqi military forces took control of the governorate building in central Kirkuk on Monday, meeting no opposition from Kurdish forces deployed in the city, security sources and residents said. A dozen Humvees from the U.S.-trained Counter Terrorism Service (CTS) arrived at the governorate building and took position in the vicinity alongside the local city police, they said. They drove to the center of the city from airport which they had captured earlier in the day from Kurdish forces. Iraqi Prime Minister Haider al-Abadi gave instructions that the Iraqi flag be hoisted on Kirkuk and other territories claimed by both the Iraqi government and the Kurdistan Regional Government. 