The Russia–Ukraine war has increased the risk not only of nuclear weapons use but also of the food crisis. A world free of nuclear weapons has once again emerged among the strategic priorities of international relations and states. We live in an age where the sources of threats are not limited to war and the threat of using nuclear weapons but also include the global climate crisis, starvation, and migration, which affect a significant part of humanity and also challenge security. Currently, a significant proportion of the global population suffers from hunger, intensified further by the coronavirus disease and economic crisis. In this article, I intend to dispense with nuclear weapons—one of the biggest threats to world stability, costing billions of dollars that fall within the scope of sunk costs—to contribute to ending hunger—one of the biggest threats to humanity— in the light of “Let humanity live so that the state can live” philosophy, and to fight the global climate crisis. This study suggests a creative perspective and addresses the problems holistically by providing a peace research analysis on the nexus of peace, security, and solidarity.