That eight-column headline: Pentagon Defends Its War Strategy, in large bold-face type across the top of yesterday’s Boston Globe proves the point that over weekends, particularly on Sunday nights, the second and third strings of news editors are in charge of the Globe and put out the Monday morning editions of the newspaper. To lead the paper with that story being promoted by Peter Arnett and his act-alikes over on Morrissey Blvd. with so much other news of the brave coalition forces battling in Iraq available, was the work of amateurs presumably trying to promote the Globe’s editorial positions.