U.S Undersecretary of State William Burns confirmed on Tuesday his country's readiness to support Iraq in all what it needs to defeat terrorism.A statement by the Prime Minister's Office said that PM Maliki received in his office today, the U.S. Undersecretary of State William Burns and the delegation accompanying him, and they emphasized their support to the war on terrorism and the exchange of views on various crises and challenges facing the region.Al-Maliki stressed that Iraq is fighting terrorism, which threatens the security and stability not only in Iraq but in the whole world, calling for greater international cooperation to defeat terrorism .Maliki praised the U.S. stands in support of Iraq in the face of terrorism and extremism, calling for the development of bilateral relations at all levels .For his part , U.S. Undersecretary of State that the United States stands with Iraq in this confrontation and is ready to support whatever it needs to defeat terrorism and extremism, noting that the current confrontation in the region is a confrontation between extremism and moderation, not among the sects.