It's a centuries-old tactic in war, to deceive your enemy.  Is that what the Russians are up to in Ukraine?  And if so are the Ukrainians falling victim to the strategy?  Brian Stewart takes a look at the issue of deception, in another of his regular weekly columns.  And Ted Barris drops by to talk about his new book, "The Battle of the Atlantic" as we continue our theme of "remembering" this week.