As the New START nuclear arms treaty between the U.S. and Russia has expired, experts warn of the potential for a new nuclear arms race, particularly involving China. With no limits in place for the first time in decades, former President Trump is considering expanding the U.S. nuclear arsenal and possibly resuming underground nuclear tests. Many lawmakers express concern over the geopolitical implications of this development, signaling a return to worst-case scenario planning. Additionally, comments from Russia underscore the grave significance of this moment in arms control history, as global powers like the U.S. and Russia navigate a future of uncertain nuclear policies. While Trump calls for a new nuclear pact with Russia, caution is needed as the world stands on the brink of renewed tensions.