Hagel's qualifications have been questioned because he has taken anti-Israel, pro-Iranian nuclear program, pro-Hamas and pro-Hezbollah positions. The present Secretary of Defense, Panetta, has no such judgmental issues, but has just issued a directive that unmarried gay partners are eligible to receive benefits, while unmarried heterosexual partners are not. And so, there is clear reason to question Panetta's sanity. While sanity has never been cited as a criterion for holding high public office in the USA, or any other country, to my knowledge,I think that it would be a good idea. That, and a test for use of drugs, such as we do for less-lofty positions.
from the article: U.S. Senator McCain says Hagel 'not qualified' as defense secretary