How has President Trump reshaped the world since returning to office one year ago? Harvard’s Stephen Walt joins Ian Bremmer on GZERO World to discuss the biggest changes to the global order as Trump aggressively expands executive power and pushes a much more muscular view of US foreign policy. The general direction of Trump’s policies may not necessarily be a surprise, Walt says, but the “speed and scope” of changes is—from aggressive tariffs and pressure on allies to a willingness to use military force abroad.