Quoted: Kerry on 'should' vs. 'shall' in the Paris agreement

"We cannot do this and we will not do this. And either it changes or President Obama and the United States will not be able to support this agreement." So said John Kerry to reporters in Paris on Saturday , explaining how a last-minute word change -- the all-important "should" was replaced briefly by "shall" -- was handled. "Shall," of course, could have meant that that the deal would have to go before the Senate, which . . . well,...