Iraq, in other words, seems to be well down the road towards a Lebanon-style political system, in which cabinet posts, military commands and control over national resources — the entire machinery of the state, in other words — are carefully apportioned along ethnic or communal lines. Such systems tend to be fragile and unstable, since the demographic and economic balance of power they rest upon is constantly changing. They also tend to concentrate power in the hands of powerful political chiefs, since only they have the authority and prestige to broker the backroom deals needed to lubricate the system.