The Everpresent Doppelganger

Like a blast from the past, some shit never changes. Hey, wait -- maybe they're trying to get rid of everyone who ever knew Rumsfeld! Tenet, Reagan, Saddam...could this be a conspiracy? The caption on this reads:

"President Ronald Reagan, with his newly-named Middle East envoy, Donald Rumsfeld standing by, right, defends the use of U.S. troops in Grenada during a Nov. 3,1983 press briefing at the White House."

And tell me again -- why was the Middle East Envoy helping to defend the invasion of Grenada?