In Iraq: Learning the Lessons of Vietnam, former secretary of defense Melvin R. Laird explains how to do it right this time:
During Richard Nixon’s first term, when I served as secretary of defense, we withdrew most U.S. forces from Vietnam while building up the South’s ability to defend itself. The result was a success — until Congress snatched defeat from the jaws of victory by cutting off funding for our ally in 1975. Washington should follow a similar strategy now, but this time finish the job properly.
That’s his summary. Read the whole article.