Police monitor an anti-war protest march along a central London street, near the Houses of Parliament, Monday Oct. 8, 2007. The demonstration by some thousands of people was organized to call for the withdrawal of British troops from Iraq. In an announcement to parliament Prime Minister Gorgon Brown said Monday that Britain plans to withdraw nearly half its troops from Iraq beginning spring of 2008. (AP Photo/Lefteris Pitarakis) Lefteris Pitarakis