I have a blog post up on Crisis Group's In Pursuit of Peace blog about the Tunisian National Dialogue Quartet, which won the Nobel Peace Prize, explaining in a nutshell why it was able to accomplish what it did in 2013:

There are several reasons the National Dialogue succeeded, including strong popular and international pressure to avoid the Egyptian scenario. A key factor was that the Quartet had real support in Tunisian society. The UGTT, despite years of dictatorship, had managed to build a national network of over 400,000 members and today has the ability to call for massive general strikes that can paralyse the economy. While the UGTT represents labour, the UTICA represents capital, the influential and moneyed business elite. The human rights league and the lawyers’ syndicate are veterans of the opposition to the Ben Ali regime and played an important role in the 2011 revolution. Together, these four organisations had both moral clout and political brawn; they could mobilise public opinion and steer the national debate. The UGTT and UTICA, precisely because they are often at loggerheads on labour issues, made for a particularly compelling duo in jointly pushing an agenda of compromise.

Read the full thing here.