Over the last two decades, Yaël Eisenstat has been a CIA Officer, a U.S. Diplomat, and a special advisor to Vice President Biden. Noticing that more and more Americans were having a hard time finding common ground, she switched her focus from counter-extremism overseas to the dangers back at home—starting with Silicon Valley. Eisenstat’s national security expertise landed her at Facebook, where she had the opportunity to work inside a company playing a major role in one of the biggest threats to our democracy. Today, Eisenstat helps us navigate the choppy intersection of ethics, technology, society, and politics to create a better future.