The world is at a critical juncture in the fight to solve the climate crisis. President Biden’s recent Leaders Summit on Climate restored some momentum on global climate action, but we are not yet on track to limit global warming to 1.5 degrees C (2.7 degrees F), the threshold scientists agree will prevent the most dangerous climate impacts. Failure to reach this goal will take a disproportionate toll on developing countries. Indeed, in recent years vulnerable nations, including small island developing states and least developed countries, have watched their key demands and needs go unanswered by other nations. These vulnerable nations are least responsible for creating the climate change problem, but they are often the most affected by its impacts like sea level rise, floods, droughts and more. It is time for vulnerable countries to be heard ahead of the COP26 climate negotiations in Glasgow in November 2021. Ensuring that these countries are empowered, mobilized and adequately supported is a matter of climate and economic justice.