BAGHDAD, Iraq - A peace group blamed the United States and Britain for the abduction of four activists shown in an insurgent video, saying the kidnapping was the direct result of the occupation of Iraq. Meanwhile, in the central town of Baqouba, unidentified gunmen opened fire on a minibus early Wednesday, killing nine construction workers and wounding two others, the Diyala police said in a statement. After a monthslong hiatus in the kidnapping of foreigners, television footage on Tuesday once again showed Westerners held captive: A German archaeologist — bound and blindfolded — knelt among masked gunmen in one video....