Editor's Note: The Saudi-Iranian rivalry has long been a driver of instability and extremism in the Middle East, and this tension grew even worse when the Saudis executed Nimr al-Nimr, a Shiite cleric an...

Editor's Note: The United States has long depended on a worldwide network of military bases to project power, reassure allies, contain enemies, and fight terrorism. Indeed, as the Islamic State has metas...

“Governing had turned out to be more complicated than criticizing from the private sector or campaigning.” –a senior Obama administration official.