If cutting into Iran’s oil income fails to weaken Ahmadinejad, the US would retain military options. But undermining his domestic standing by limiting Iran’s revenues stands a better chance of succeeding than diplomatic efforts to persuade the regime to suspend uranium enrichment voluntarily, or coercive sanctions.
如果减少伊朗的石油收入没能削弱内贾德的地位，那么美国还保留着采取军事行动的选择。但是通过鉴定限制伊朗的收入来削弱他的国内地位比通过外交努力来劝说他的政权自愿搁置铀浓缩活动或者强行采取制裁成功的可能性更大。