Lincoln Chafee, a former governor and senator from Rhode Island, says he's exploring a run for the 2016 Democratic nomination. On a new web site, Chafee, who served as an independent as governor and a Republican in the United States Senate, says he's concerned about "international instability, especially in the Middle East and north Africa." "Throughout my career, I exercised good judgment on a wide range of high-pressure decisions, decisions that require level-headedness and careful foresight," he added. "Often these decisions came in the face of political adversity. During the next weeks and months I look forward to sharing with...