http://www.theobamanews.com/ObamaBlogs/new-obama-ad-on-leadership/ The Obama campaign released another TV ad today that will go up in battleground states, titled “America’s Leadership;” this one tackles the threat of nuclear weapons in the hands of terrorists and underscores the presidential candidates’ battle over commander-in-chief credentials. Wed, 16 Jul 2008 07:34:07 CDT en