There seems to be something about the job of defense secretary that attracts blunt, no-nonsense realists.
Exhibit A was on display last month at the National Constitution Center, where Robert Gates demonstrated again why Republican and Democratic presidents wanted him running the Pentagon.
In a public question-and-answer session early in the day, in media interviews, and finally at the Liberty Medal presentation, Gates was thoughtful, professional - and blunt.
Asked about a U.N. vote on Palestinian statehood, he noted that as the "ultimate realist" he looks at whether an action will advance or deter the cause of peace. Gates said a unilateral move by the Palestinians deterred, but added that actions from both sides had stood in the way of progress over the years.