International Herald Tribune: “The British authorities removed a ban on carry-on luggage Monday, allowing airline passengers to carry a single, briefcase-sized bag on flights leaving British airports. Books, laptop computers and iPods can also be taken on board again. But airline officials said it remained unclear whether the new rules would ease the long delays at security checkpoints that have forced airlines to cancel some flights. The British transportation secretary, Douglas Alexander, warned at a news conference that “present difficulties at airports may continue for some time.”