A CIA official said Thursday that U.S. intelligence officials have concluded that terrorist leader Abu Musab al-Zarqawi was, in "high probability," the person shown on a video beheading American Nicholas Berg, based on an analysis of the voice on the video. The speaker on the video, now believed to be al-Zarqawi, reads a lengthy statement criticizing Islamic scholars and taunting the crusaders. Standing alongside four other militants wearing headscarves and masks to disguise themselves, al-Zarqawi then kills Berg. Lt. Gen. Ricardo Sanchez, the top U.S. commander in Iraq, told reporters Thursday in Baghdad that it appears al-Zarqawi was responsible. The...