Throughout the last week and in his acceptance speech Thursday night, Sen. John Kerry charged that the Bush administration should have — and could have — won greater international support before it launched military operations in Iraq. Few presidential challengers have offered such a telling and disturbing critique of an incumbent's foreign policy — telling and disturbing not for what Kerry said about the president but for what he said about himself. The lament of international isolation echoed the Democratic presidential nominee's concerns about the 1991 Persian Gulf War. Then, despite backing for the United States from virtually the entire...