Mitch Zeller, director of the Food and Drug Administration’s Center for Tobacco Products, gave a keynote address at an e-cigarette conference at New York University’s School of Law on Friday. The long-time tobacco hawk struck a surprisingly conciliatory tone, acknowledging that the issue of how to regulate e-cigs, “is not black-and-white,” and that there’s currently “a stalemate” on harm reduction strategies. Zeller also mentioned the Nasem Report, which reported reduced short-term negative health outcomes from e-cigs and that vape users are less likely to smoke cigarettes.