U.S. Secretary of State John Kerry, left, and French Foreign Minister Laurent Fabius. (Mandel Ngan/AFP/Getty Images) PARIS — The proposed accord was just hours from a final vote when the glitch was spotted. Someone had changed a single word in the draft text — from a “should” to a “shall” — and suddenly the entire climate deal appeared at risk of faltering. Secretary of State John F. Kerry phoned his old friend, French Foreign Minister Laurent Fabius, in exasperation over a tiny revision that implied huge new legal and financial obligations. “We cannot do this,” Kerry warned. Less than four hours later, the accord was approved with the bang of a gavel. A bit of diplomatic finesse had excised the troublesome word and helped clinch a historic agreement. The formal adoption of the accord late Saturday was greeted with applause and cheers by thousands of weary delegates to the […]