WASHINGTON (Reuters) - An Iraqi official who had been involved in the country's suspected nerve gas program has surrendered to U.S. forces and was being interrogated, officials said on Friday. Imad Husayn Abdallah al-Ani, who was not on the U.S. military's list of 55 most-wanted Iraqi officials, recently turned himself in to U.S. forces in Iraq (news - web sites) but is denying that the country was developing weapons of mass destruction, a U.S. official said. He was involved in Iraq's suspected program to produce the VX nerve agent about a decade ago, but it was unclear what his most...