By "leadership" do you mean mindlessly following the crowd in the same futile and costly gestures we've been stuck with for the past 30 years? We've spent a fortune on policies and treaties that we have known all along accomplish nothing even if everyone does what they say they're going to do, which they never do. Leadership would mean blowing the whistle on this fiasco and insisting only on policies where the benefits are higher than the costs, even if that means we end up doing next to nothing.