The New US National Security Strategy: "Principled Realism"?

Last month, the United States published its new National Security Strategy. In the words of President Donald Trump, the document "lays out a strategic vision for protecting the American people and preserving our way of life, promoting our prosperity, preserving peace through strength, and advancing American influence in the world." This roundtable discussion brings together three renown experts to debate change and continuity in the new National Security Strategy, what it tells us about the future direction of US foreign policy and what it means for the rest of the world.