Wim Kok did the honourable thing. He was prime minister when more than 7,000 Bosnian Muslims under the protection of Dutch UN peacekeepers were slaughtered by Serb troops. The Dutch battalion (Dutchbat), unwilling to risk their own lives, handed the victims over to their butchers. So last week, after the publication of an exhaustive Dutch report, Wim Kok took responsibility - not for the killings, of course, but for having let them happen under his watch. Such a principled move is rare enough. The French, whose dealings with the Serbs were often dubious, to say the least, never did anything...