In his trenchant analysis, Stephen Biddle ("Seeing Baghdad, Thinking Saigon," March/April 2006) argues that the escalating violence in Iraq is not a nationalist insurgency, as was the Vietnam War, but rather a "communal civil war" and that it must therefore be addressed by pursuing a strategy different from "Vietnamization": if the United States were simply to turn over responsibility for counterinsurgency to the new Iraqi army and police forces, it would risk inflaming the communal conflict, either by empowering the Shiites and the Kurds to slaughter the Sunnis or by enabling a Trojan horse full of Sunni insurgents to penetrate the multiethnic security forces and undermine them…