Strikes on Iran?

While reading an op-ed by Jackson Diehl on Bush's options with Iran, I learned that both Lieberman and McCain have endorsed military action. That info was incidental to the main point of the column, but interests me nevertheless. Why haven't I already heard about these senators' recommendations? Did they just barely endorse military action, or is there another reason the media hasn't broadcast it more loudly? Or maybe I am just not keeping up with the news like I should.