… The assault on Paris has thrust national security to the heart of the presidential race, forcing candidates to scramble and possibly prompting voters to reconsider their flirtations with unconventional candidates and to take a more sober measure of who is prepared to serve as commander in chief.
Until now, the campaign, when it did not descend into insult comedy on Twitter or become mired in biographical disputes, was focused on a subtler sort of threat to the country’s way of life: economic and racial inequality, for Democrats, and a less-defined fury about a loss of America’s identity, for Republicans. But the bloodshed in the heart of Paris posed concrete questions about how the contenders would respond to an urgent and seemingly metastasizing threat. CONT.
Jonathan Martin, New York Times