The majority of Americans (59%) regard Russia’s ongoing invasion of neighboring Georgia as a threat to U.S. national security, but less than a third (31%) believe the United States should take any diplomatic action against Russia. A similar number (33%) say the United States should not take diplomatic action against Russia, according to a new Rasmussen Reports national telephone survey taken Monday night. A plurality (36%) remain undecided. Just over half (51%) also believe that John McCain is the best equipped of the two major presidential candidates to handle a similar crisis in the future, while 36% (WTF?) believe Barack Obama is the better of the two to deal with this kind of situation.