How Much Of Your Life Has The United States Been At War? 05/26/2015    US NEWS, WORLD NEWS   Somewhere in the ever-flowing river of flotsam that is Twitter, a simple data point offered by a college commencement speaker jumped out at me before being borne away on the tide of immediacy. This bit of data: The speaker was ABC journalist Martha Raddatz, and the point is the key one in the intro:…