With the adoption of a new constitution last weekend, Tunisia became the first post-revolutionary country in the Arab world to forge a political settlement accepted by the broad mass of its people. The process has hardly been swift, but the passage of the document by an overwhelming majority—200 delegates in favor and only 12 against—is a significant achievement. At a time when the other Arab countries that saw popular uprisings in 2011 have been dragged down by polarization and violence, Tunisia provides an example of political compromise overcoming broad national differences. Tunisia’s path to this moment has often been precarious. […]