Politico: After years of preparation and two weeks of tireless negotiations, after all the speeches and backroom compromising, one misplaced word brought the momentum toward a historic global deal on climate change to a halt Saturday for at least a few hours. Obama administration lawyers discovered early in the day that the latest draft text had a potentially deal-killing tweak: Deep into the document, in Article 4, was a line declaring that wealthier countries "shall" set economy-wide targets for cutting...