Peter Flory, the assistant secretary of defense for international security policy, is stepping down in the next few weeks, vacating another key Pentagon policy post, according to Defense Department officials. This move, not yet announced by the Pentagon, follows President Bush's use of a recess appointment last summer to install Flory to the Defense Department policy post, sidestepping the objections of Sen. Carl Levin (D-MI) who placed a hold the nomination. Levin last year blocked Flory's nomination because of the...