In her first appearance at a United Nations event, Melania Trump focused on issues facing the world’s children, urging adults to take the lead in teaching them “life’s many ethical lessons” and combating cyberbullying. Hosting a luncheon for spouses of U.N. world leaders and committee heads on Wednesday, Trump stressed the importance of leading and teaching children “by our own example,” saying that “as adults we are not merely responsible — we are accountable.” “Whether it is drug addiction, bullying, poverty, disease, trafficking, illiteracy, or hunger, it is the children who are hit first and hardest in any country,” Trump said.