This book discusses the limitations of the practice of imposing no fly zones and considers the potential utility of a no fly zone in the case of Syria.

Imposing no fly zones on governments that use force from the air against their own people has been a practice of the United States since the closing days of the first Iraq war. A no fly zone was imposed on Iraq from 1991 to 2003, on Bosnia from 1993-1995 and on Libya for three months in 2011. No fly zones have come to be viewed as an easily feasible, moderately costly, acceptably risky, essentially nonviolent form of intervention...