DENVER – For many foreign audiences, the United States’ primary elections for the 2012 presidential vote – which will, alas, continue to rage into the summer – must be a frightening display of what Americans and their leaders do not know about foreign policy. Debate after debate reveals the fact that none of the candidates seeking to challenge President Barack Obama is particularly interested in the details of any of America’s relationships around the globe, not to mention the crises that dot the international landscape, especially those that do not involve US troops.