Nicholas Burns:

The United States will likely remain the world’s predominant power for many decades to come, my Harvard colleague Joe Nye concludes in his insightful new book, “Is the American Century Over?” This welcome prediction is tempered by Nye’s warning about key challenges that could yet lead to American decline, most notably, political dysfunction at home.

Could we be witnessing exactly what Nye writes about in our current caustic debate on President Obama’s nuclear deal with Iran?

Read his argument concerning congressional actions against the talks.