ROME (Reuters) - The United States on Wednesday warned countries it has accused of pursuing weapons of mass destruction, including Iran, Syria and North Korea (news - web sites), to "draw the appropriate lesson from Iraq (news - web sites)." John R. Bolton, U.S. undersecretary of state for arms control and international security, also appealed to Syria and other countries in the Middle East to open themselves up to "new possibilities" for peace in the region. "With respect to the issue of the proliferation of weapons of mass destruction in the post-conflict period, we are hopeful that a number of...