Messages from Hillary Clinton’s private email account have been released by the US State Department. <br /><br /> Many of them relate to the 2012 attack on America’s consulate in Benghazi. Critics are keen to learn more about the former secretary of state’s response to the incident.<br /><br /> But several congressional probes have found no “smoking gun” linking her to any failure to protect the four Americans who were killed. <br /><br /> The Benghazi attack has plagued Clinton for years. She went before an investigating committee in 2013.<br /><br /> “I want people to be able to see all of them. And it is the fact that we have released all of them that have any government relationship whatsoever,” said Clinton.<br /><br /> “In fact, the State Department had the vast majority of those anyway because they went to what are called ‘dot gov’ accounts.”<br /><br /> Clinton had called for the emails to be released as soon as possible, with critics questioning why she used a personal account rather than a government one while she was secretary of sta