Former National Security Adviser Sandy Berger, who served under President Bill Clinton, has died at the age of 70. "V sad start to day; just learned Sandy Berger passed away during the night," Richard Haass, the president of the Council on Foreign Relations, tweeted Wednesday morning. "Good man & friend who served nation well as bill clinton's NSA." Antony Blinken, the current deputy secretary of state and a Berger acolyte, tweeted, "Mourn the passing of Sandy Berger --- father, husband, mentor, friend, leader and great patriot. RIP SRB." Berger, a longtime lawyer who founded Stonebridge International, a Washington-based advisory group,...