President Trump and North Korea's Kim Jong-un met in a historic summit last week where Kim signed a pledge committing to “complete denuclearization”. Trump said “We are prepared to start a new history and … to write a new chapter between our nations”. The meeting seemed improbable just a few months ago when we seemed on the brink of war. It's a significant step toward peace and opening up North Korea from its isolationism. North Korea agreed to release three U.S citizens; return the remains of U.S. soldiers from the Korean War; a halt of missile and nuclear tests, and the destruction of nuclear test sites. This is a major diplomatic success—a success that many discounted because of the president's personality. But in this case, his determination and boldness has paid off.