Obama: 'We've Closed An Important Chapter In This Tragedy' President Obama addresses the apprehension of a suspected bomber, and the tragedies in both Boston and West, Texas. By Michael O'Brien. The nation has "closed an important chapter" in its response to a terrorist attack on Monday, President Barack Obama said Friday evening at the White House, capping what the president called a "tough week" that captured much of the nation's attention. After a day of anxious waiting that played out live on national television and in social media, police apprehended Dzhokhar Tsarnaev — the second, remaining suspect in Monday's bombing...