Every liberator deserves some libation. The Boston Globe reports: he job of occupying Iraq means hardship and long hours and sometimes a game of Risk over a hookah and a few beers. In a city where few people drink, Baghdad's sealed-off green zone counts at least seven bars, including a Thursday night disco, a sports bar, a British pub, a rooftop bar run by General Electric, and a bare-bones trailer-tavern operated by the contractor Bechtel. Only employees of the occupation are welcome in most of them. U.S. troops ejected a reporter from the basement sports bar a few months ago, at the instance of Coalition Provisional Authority employees drinking inside. The plushest tavern is the CIA's rattan furnished watering hole, known as the ''OGA bar.'' OGA stands for ''Other Government Agency,'' the CIA's low-key moniker. One of the more interesting hangouts is the Green Zone Cafe, a tent erected in the parking lot of a former gas station. The cafe brings together a raucous mix of occupation personalities and others like reporters who don't carry government IDs. On a typical evening, one can see U.S. soldiers smoking from 4-foot-tall hookahs and security contractors guffawing over beer, their machine guns by their sides. The CPA's would-be strategists can sometimes be seen in their ubiquitous military desert boots and dress shirts and slacks, playing Risk, the board game of global domination.