Special Operations Opsec Education Fund, a dark money group that shares an office with top aides to the 2008 campaign of Republican presidential nominee John McCain, is launching an $397,000 ad buy attacking the President Barack Obama and his administration over last September's Benghazi embassy attack, according to disclosures filed with the Federal Election Commission. 

The group, which says its members are forrmer members of the Navy SEALs and intelligence officers,  already attacked Obama's administration in August for, the group claimed, leaking sensitive intelligence information.

The new ad focuses on the administration's handling of the embassy ...