Amid the intensifying climate extremes of recent years, which have produced direct and indirect impacts on cities, collaboration between civil society, academia, and the public sector has become indispensable. Understanding the socio-environmental conflicts arising from these events — and finding viable solutions — depends on the active engagement of these actors through local policies. The event “Leadership in the Context of Extreme Events in Sustainable Cities” aligns with the main theme of Urban Circuit 2025 — “Facing Urban Challenges: Pathways to Just and Sustainable Cities”, intersecting two key thematic lines (1 and 3): 1) Climate Action and the Urban Environment 3) Reducing Urban Inequalities In doing so, the event connect movements and actions in response to climate crisis–intensified events, such as those that occurred in Canoas (RS), the discussion seeks foster a reflection on crucial role of civic and political leadership in addressing the multifaceted challenges of urban planning, preparedness, budgeting, and implementation.