Since the end of the Iran-Iraq war in the 1980s, conflict in the Middle East has been increasingly wrought with internal struggles, driven by ethnic, inter-communal, and religious differences. Islamic radicalism has grown as an internal threat, and foreign intervention is now a potential catalyst. Since 1990, the Middle East has twice witnessed the introduction of foreign armies, first to halt Iraqi expansionism, and more recently, to bring about regime change in Iraq. This perfect storm of factors has brought about a heightened level of instability, with numerous conflicts simmering in...