As first lady, Hillary Rodham Clinton jaw-boned the authoritarian president of Uzbekistan to leave his car and shake hands with people. She argued with the Czech prime minister about democracy. She cajoled Roman Catholic and Protestant women to talk to one another in Northern Ireland. She traveled to 79 countries in total, little of it leisure; one meeting with mutilated Rwandan refugees so unsettled her that she threw up afterward. But during those two terms in the White House, Mrs. Clinton did not hold a security clearance. She did not attend National Security Council meetings. She was not given a...